TOEFL Speaking 問題集（4タスク × 各4題＋模範解答）

TOEIC 700 から TOEFL iBT Speaking 26+/30 を目指す問題集。 4 タスク × 4 例題 = 計 16 例題、各タスクに高得点モデル回答付き。

TOEFL Speaking セクション概要

評価観点：

• Delivery: 流暢さ、発音、ペース
• Language Use: 文法、語彙、文構造の多様性
• Topic Development: 内容の十分性、論理的展開、関連性

全タスク共通の鉄則

1. 時間管理：60 秒 → 約 130-150 単語が目標。45 秒 → 約 100 単語。早すぎず遅すぎず。
2. テンプレ活用：各タスク用のフレームを暗記し、内容部分のみ毎回入れ替える
3. 明確な構造：「主張 → 理由1 → 例1 → 理由2 → 例2 → まとめ」または時間内ならリーズン2つで十分
4. 自己訂正は最小限：間違えても止まらず、次の文で言い直すか進む
5. 発音より「流れ」：ネイティブ並みの発音は不要。論理的明快さが点数に直結

目次

Task 1: Independent Speaking（4題）

共通テンプレ

[State preference] I prefer [option A] over [option B] for two main reasons.

[Reason 1 + example] First, [reason 1]. For example, [personal example or general fact].

[Reason 2 + example] Second, [reason 2]. To illustrate, [another example].

[Wrap-up if time allows] So overall, [option A] is the better choice for me.

目安：130-145 単語、45 秒で発音可能。

Q-T1-1: Online vs Traditional Classes

Question: Some students prefer to take courses online, while others prefer traditional in-person classes. Which do you prefer and why? Use specific reasons and details.

Model Answer (143 words):

I prefer traditional in-person classes over online courses for two main reasons.

First, in-person classes allow for direct interaction with both professors and classmates. When I have a question, I can raise my hand and get an immediate response. For example, last semester I was taking a statistics course, and I was confused about a particular concept. Being able to ask the professor right after class — instead of waiting hours for an email reply — saved me a lot of time.

Second, attending physical classes helps me stay disciplined and focused. When I'm in a classroom, I'm not tempted by distractions like my phone or social media. To illustrate, when I tried an online course last summer, I found myself frequently checking notifications during lectures, which significantly hurt my comprehension.

So overall, the in-person experience is more effective for me.

評価コメント:

• Delivery: 句読点で自然に区切れる文章
• Language: 接続詞 "First / Second / For example / To illustrate / So overall" で構造明確
• Topic: 二つの理由が具体例で支えられている

Q-T1-2: Working with Group vs Alone

Question: Do you prefer to work on projects with a group or alone? Use specific reasons and examples.

Model Answer (139 words):

I prefer working with a group on projects rather than working alone, mainly for two reasons.

First, group work brings diverse perspectives. Different members have different backgrounds and skills, which leads to more creative solutions. For example, in a recent business case study, my teammate suggested an unexpected angle from her economics background that completely changed our approach — and we ended up with a much stronger proposal.

Second, working with others helps me stay motivated. When I work alone, I sometimes procrastinate, but when I have teammates depending on me, I push myself to meet deadlines. To illustrate, during finals week, my study group held me accountable for keeping up with our shared review materials, and I was much more productive than I would have been on my own.

So group work generally produces better results for me.

Q-T1-3: City vs Countryside

Question: Some people prefer to live in big cities, while others prefer the countryside. Which do you prefer? Explain why.

Model Answer (141 words):

I prefer living in a big city over the countryside, primarily for two reasons.

First, cities offer far more career and educational opportunities. Major industries, top universities, and innovative companies are concentrated in urban centers. For example, when my cousin moved from a small rural town to Tokyo, she was suddenly able to attend industry meetups, take specialized courses, and meet potential employers — opportunities simply unavailable in her hometown.

Second, big cities provide diverse cultural and social experiences. There are museums, restaurants, theaters, and people from all over the world. To illustrate, in any given week, I can attend an international film screening, try cuisine from a country I've never visited, and meet new friends from different backgrounds.

So even though the countryside has its peaceful charm, the opportunities and diversity of cities are more important to me.

Q-T1-4: Saving vs Spending Money

Question: Some people believe young people should save most of their money, while others think they should spend it on experiences. Which view do you agree with?

Model Answer (143 words):

I lean toward the view that young people should spend a reasonable portion of their income on experiences rather than save almost all of it.

First, experiences in your twenties are often impossible to replicate later. Travel, learning new skills, or meeting people abroad — these things shape who you become. For example, my older sister spent three months backpacking in Southeast Asia after college, and that experience deeply influenced her career direction.

Second, while saving is important, excessive saving in your youth often means delaying personal growth that has long-term value. To illustrate, attending professional networking events or taking a useful course costs money but can pay back many times over in later opportunities.

Of course, some saving is essential for emergencies. But spending intentionally on growth experiences — not luxury — is something I strongly support for young people.

Task 1 練習法

1. 30 トピック作成：典型的選好問題を 30 個リスト化（例：書/電子書籍、夏/冬、早起き/夜型）
2. 理由ストック：「diversity / efficiency / discipline / opportunity / health / experience / accountability」など汎用理由を準備
3. タイマー練習：15秒準備で頭を整理、45秒で言い切る訓練を 1 日 5 題
4. 録音 → 自己評価：自分の音声を聴き、「フィラー (um, uh)」「沈黙」「文の途中で詰まる」をチェック

Task 2: Reading + Conversation（4題）

タスク形式

1. Reading: 大学のキャンパス通知（45-50 秒で読む、約 75-100 語）
2. Conversation: 学生同士の対話、女性または男性が通知に対して意見と理由を述べる
3. Question: 学生の意見と理由を要約する
4. 準備時間 30 秒、回答時間 60 秒

共通テンプレ

[State the announcement] The university is planning to [main change in announcement].

[State student's opinion] The [man / woman] thinks this is a [good / bad] idea for two reasons.

[Reason 1] First, [her/his first reason]. Specifically, [supporting detail].

[Reason 2] Second, [her/his second reason]. For example, [supporting detail].

目安：130-145 単語。

Q-T2-1: Library Late-Night Closure

Reading (75 words):

Notice from the University Library

Beginning next semester, the main library will close at 11 PM instead of remaining open 24 hours. This change is being made for two reasons. First, the library has reviewed entry records and found that fewer than 30 students typically use the library between 11 PM and 6 AM. Second, the salaries of overnight staff have become difficult to justify given low usage. The library will continue to be open earlier in the morning.

Conversation excerpt (woman speaking):

"I think this is a terrible decision, honestly. They're saying only 30 students use the library overnight, but for those of us who do, it's essential. I'm a graduate student in chemistry, and our lab schedules force us to do reading late at night. The library is the only quiet place that's well-lit and has all the journals I need. Where am I supposed to go now?

Plus, the library is on a public campus, paid for by tuition, including ours. The university shouldn't make decisions based purely on staff costs. They could rotate just one staff member or use security cameras instead. There were better solutions than just closing earlier."

Question: The woman expresses her opinion of the announcement. State her opinion and explain her reasons.

Model Answer (140 words):

The university is planning to close the main library at 11 PM instead of keeping it open 24 hours. The woman strongly opposes this decision for two reasons.

First, she argues that even though only about 30 students use the library overnight, those students genuinely need it. As a chemistry graduate student, her lab schedule requires her to do research late at night, and the library is the only suitable quiet space with the journals she needs. Closing it would create a serious problem for students like her.

Second, she believes the university shouldn't base such decisions purely on staff costs. The library is funded by tuition, including from students who use it overnight. She suggests alternatives, such as rotating one staff member or using security systems, that could keep the library open without significant additional cost.

Q-T2-2: New Mandatory Foreign Language Requirement

Reading (80 words):

University Curriculum Update

Starting in the fall semester, all undergraduate students will be required to complete two semesters of a foreign language to graduate, regardless of major. The university believes this requirement will broaden students' cultural perspectives and enhance their employability in a globalized job market. Engineering and business majors, who previously had no language requirement, will now need to fit two language courses into their schedules. The requirement will not affect students currently enrolled.

Conversation excerpt (man speaking):

"I think this is actually a great policy. I'm an engineering major myself, and at first I would have hated it, but I can see now how useful languages are. When I did my internship abroad last summer, I worked with engineers from Germany and Japan. The ones who could communicate in our partners' languages had a huge advantage — they understood projects better, built stronger relationships, and got more opportunities.

And honestly, two semesters isn't a huge time commitment. It's a small price for skills that genuinely matter for a global career. I wish my class had been required to do this from the start."

Model Answer (137 words):

The university is introducing a new requirement that all undergraduate students must take two semesters of a foreign language. The man strongly supports this policy for two reasons.

First, he points out that foreign language ability has tangible career benefits. Drawing on his internship experience abroad, he observed that engineers who could communicate in their international partners' languages — German and Japanese, for example — had clear advantages. They understood projects more deeply, built better relationships, and accessed more opportunities than their monolingual peers.

Second, he argues that two semesters is a modest investment for such valuable skills. Although he initially expected to dislike the requirement as an engineering major, he now believes the time commitment is reasonable given the long-term professional benefits. He even wishes the requirement had been in place when he started college.

Q-T2-3: Cafeteria Going Plant-Based

Reading (85 words):

University Cafeteria Update

Beginning next month, the main university cafeteria will offer only plant-based meals. This decision was made for two reasons. First, surveys show that approximately 40% of students already prefer vegetarian or vegan options, suggesting growing demand. Second, the university has committed to reducing its environmental footprint, and plant-based meals significantly lower carbon emissions compared to meat-based meals. Students who prefer meat will still be able to purchase meat dishes from the secondary cafeteria located across campus.

Conversation excerpt (woman speaking):

"I think this is a really problematic decision. I'm not against vegetarian food at all — I eat it sometimes. But forcing everyone to walk to a different cafeteria just to get a normal meal seems unfair. The secondary cafeteria is fifteen minutes from my dorm, and most of my classes. That's a huge inconvenience just to choose chicken instead of tofu.

And honestly, the survey result of 40% means 60% of students don't necessarily prefer vegetarian. The university is making a decision that doesn't reflect what the majority wants. It feels like environmental policy is being prioritized over student choice."

Model Answer (139 words):

The university plans to make the main cafeteria plant-based only, while moving meat options to a secondary cafeteria. The woman opposes this decision for two reasons.

First, she points out that requiring meat-eaters to walk to a different building is genuinely inconvenient. The secondary cafeteria is about fifteen minutes from her dorm and classes, which makes simply choosing a chicken dish a significant time commitment. This kind of inconvenience disrupts students' busy schedules.

Second, she questions the underlying logic. Although 40% of students prefer vegetarian options, that means 60% do not — yet the policy is being applied to everyone in the main cafeteria. She feels that the university is prioritizing its environmental goals over the actual preferences of the majority of students. To her, this represents environmental policy overriding student choice rather than balancing them.

Q-T2-4: New Mandatory Internship Program

Reading (90 words):

University Internship Requirement

Starting next academic year, all juniors will be required to complete a semester-long internship as part of their degree. The university believes this will improve students' job placement rates by providing real-world experience before graduation. Internships will be coordinated through the Career Services office, and academic credit will be granted in lieu of two regular courses. Students who already have substantial work experience may apply for an exemption. The requirement applies to all majors, including those in liberal arts and sciences.

Conversation excerpt (man speaking):

"I'm not sure this is the right approach. The idea of internships sounds great, but the way it's being implemented worries me. Replacing two regular courses with an internship means students miss core classes — and not all internships are equally valuable. I had a friend who did an internship that was basically getting coffee for everyone. He learned almost nothing, but he still got the credits.

Also, students who don't have strong networks or who study less popular fields might struggle to find a quality placement. The university could end up forcing students into low-quality experiences just to satisfy the requirement."

Model Answer (136 words):

The university is requiring all juniors to complete a semester-long internship in lieu of two regular courses. The man has reservations about this policy for two reasons.

First, he points out that internship quality varies enormously. He gives the example of a friend whose internship consisted mostly of getting coffee — providing little actual learning, yet still earning the same academic credits. Replacing two real courses with such low-quality work would harm students' education rather than help it.

Second, he is concerned about students from less-connected backgrounds or in less-popular majors. They may struggle to find meaningful placements, since opportunities depend on networks and field popularity. As a result, students could end up being forced into substandard experiences simply to fulfill the requirement, which undermines the program's intended benefits.

Task 2 練習法

1. 読みながらメモ：通知の主旨、変更内容、二つの理由を 4-5 単語ずつメモ
2. 会話を聴きながら：学生の opinion (賛成/反対) → 理由 1 → 理由 2 を簡潔に書き取る
3. 回答：reading の概要を 10 秒、opinion を 5 秒、理由 1 を 20 秒、理由 2 を 20 秒、まとめ 5 秒
4. 時間配分の罠：reading の説明に時間を使いすぎない（10秒以内）

Task 3: Reading + Lecture（4題）

タスク形式

1. Reading: 学術概念の定義（約 75-100 語、45-50秒で読む）
2. Lecture: 教授がその概念の具体例を講義（60-90秒）
3. Question: 概念を例とともに説明する
4. 準備 30 秒、回答 60 秒

共通テンプレ

[Define the concept] The reading explains the concept of [X], which means [definition in own words].

[Introduce example] In the lecture, the professor illustrates this with an example about [topic].

[Detail 1 of example] Specifically, [first part of example showing the concept in action].

[Detail 2 / outcome] As a result, [the outcome demonstrating the concept].

[Wrap-up if time allows] This example clearly demonstrates the principle of [X].

Q-T3-1: Cognitive Dissonance

Reading (85 words):

Cognitive Dissonance

Cognitive dissonance is a psychological phenomenon in which a person experiences mental discomfort when holding two contradictory beliefs, or when their behavior conflicts with their stated values. To reduce this discomfort, people often modify their beliefs or rationalize their behavior to bring the two into alignment. This adjustment can occur unconsciously, leading individuals to genuinely believe new positions that justify their actions, even when those actions originally violated their previous beliefs.

Lecture excerpt:

"Imagine a person who considers themselves environmentally conscious — they recycle, they avoid plastic — and then they go on a long international flight, which produces enormous carbon emissions. There's a contradiction between 'I care about the environment' and 'I just took a flight that contributes to climate change.' The mental discomfort this creates is cognitive dissonance.

Now, what do people do? Often, they don't actually change their behavior — they don't decide to fly less. Instead, they rationalize. They might think, 'Well, my flight is only one of millions; my impact is tiny.' Or, 'The conference I'm attending is important enough to justify the emissions.' Or even, 'I'll plant trees to offset it.'

Notice that the actions didn't change, but the beliefs shifted to make peace with the actions. That's classic cognitive dissonance reduction at work."

Model Answer (139 words):

The reading defines cognitive dissonance as the mental discomfort people feel when their beliefs conflict with their actions, leading them to adjust their beliefs to reduce that discomfort.

The professor illustrates this with an example of an environmentally conscious person who takes a long international flight, which produces significant carbon emissions. This creates a clear conflict: the person believes in protecting the environment, but their behavior contributes to climate change.

According to the professor, instead of changing the behavior — for instance, by flying less — most people change their beliefs. They might tell themselves their individual impact is too small to matter, or that the purpose of the trip justifies the emissions, or that they will offset the flight by planting trees.

This example shows exactly how cognitive dissonance pushes people to align their beliefs with their actions.

Q-T3-2: The Bystander Effect

Reading (90 words):

The Bystander Effect

The bystander effect is a psychological phenomenon in which individuals are less likely to offer help to a victim when other people are present. The more bystanders there are, the less likely any single one of them is to intervene. Two main mechanisms are thought to be at work: diffusion of responsibility, where each individual assumes someone else will help, and social influence, where people look to others' inaction as a cue that intervention is unnecessary or inappropriate.

Lecture excerpt:

"There's a classic study by Latané and Darley that beautifully illustrates this. They had participants come into a lab to fill out a questionnaire. Then, smoke began pouring into the room from a vent — clearly not a normal situation.

When participants were alone, the vast majority — about 75% — went out to report the smoke. But when participants were in a room with two other people, who were actually research confederates instructed to ignore the smoke, only about 10% reported it. The participants were watching the others and seeing no reaction. They concluded the situation must not be dangerous — so they sat there, even as the room filled with smoke.

This shows both mechanisms in action: diffusion of responsibility and social influence shaping individual behavior."

Model Answer (138 words):

The reading explains the bystander effect, which states that people are less likely to help in an emergency when others are present, due to diffusion of responsibility and social influence.

The professor illustrates this with a famous study by Latané and Darley. In the experiment, participants filled out a questionnaire while smoke was deliberately pumped into the room. When alone, about 75% of participants quickly went out to report it.

However, when participants were with two other people who had been instructed to ignore the smoke, only about 10% reported it. Participants observed the others remaining calm and concluded the situation must not be dangerous, so they remained passive even as the room filled up.

This experiment perfectly demonstrates how diffusion of responsibility and social influence inhibit individual action when others are present.

Q-T3-3: Loss Aversion

Reading (85 words):

Loss Aversion

Loss aversion is a behavioral economics concept describing the tendency for people to prefer avoiding losses to acquiring equivalent gains. In other words, the psychological pain of losing $100 is felt more intensely than the pleasure of gaining $100. This asymmetry leads people to make decisions that seem irrational from a strict economic standpoint — for example, holding onto bad investments to avoid realizing a loss, or rejecting fair gambles where the potential gain equals the potential loss.

Lecture excerpt:

"Let me give you a real-world example. Imagine you bought stock in a company a year ago for $1,000. Today, the stock is worth $700 — you've lost $300 on paper. A purely rational investor might sell, accept the loss, and move the money into a better investment.

But here's what most people actually do: they hold on, hoping the stock will recover. They tell themselves, 'It'll come back.' Why? Because selling forces them to realize the loss — to make it real. As long as they don't sell, the loss remains hypothetical.

Studies show that this behavior — sometimes called the 'disposition effect' — costs investors significant money over time, because the stocks people refuse to sell often continue to underperform. The pain of admitting a loss outweighs the rational benefit of cutting their losses."

Model Answer (140 words):

The reading defines loss aversion as the psychological tendency for people to feel losses more strongly than equivalent gains, often leading them to make economically irrational decisions to avoid realizing losses.

The professor illustrates this with an investment example. Suppose someone bought stock for $1,000 that has fallen to $700 — a $300 paper loss. Logically, they could sell and reinvest in a better-performing asset.

However, most investors instead hold onto the losing stock, telling themselves it will recover. They do this because actually selling forces them to realize the loss, making it psychologically real. As long as they don't sell, the loss feels hypothetical.

Research shows this behavior — sometimes called the disposition effect — actually costs investors money over time, since the stocks they refuse to sell often continue to lose value. This perfectly captures loss aversion.

Q-T3-4: Survivorship Bias

Reading (90 words):

Survivorship Bias

Survivorship bias is a logical error in which people draw conclusions based only on examples that have "survived" some selection process, while ignoring those that did not. This bias leads to overly optimistic conclusions because failures are systematically excluded from analysis. The bias often appears in business, investing, and historical research, where surviving cases are easier to study than vanished ones, but its consequences can be misleading or even harmful.

Lecture excerpt:

"Consider how popular media talks about successful entrepreneurs. We hear stories of college dropouts who started companies in their garage and became billionaires — Steve Jobs, Bill Gates, Mark Zuckerberg. The conclusion many young people draw is: 'College isn't necessary. You can drop out and become rich.'

But this reasoning ignores something crucial. For every Steve Jobs who succeeded, there are probably tens of thousands of college dropouts who failed and are now working ordinary jobs without degrees. We never hear about them, because failure stories don't make headlines. We only hear about the survivors.

When we use only success stories to draw lessons about life strategies, we're essentially looking at one tiny slice of reality and assuming it represents the whole. That's survivorship bias in action — it makes risky paths look more attractive than they statistically are."

Model Answer (140 words):

The reading defines survivorship bias as the error of drawing conclusions only from examples that survived a selection process, while ignoring failures, which leads to overly optimistic conclusions.

The professor illustrates this with the example of how the media portrays successful entrepreneurs. Stories of college dropouts who became billionaires — like Steve Jobs and Bill Gates — are widely told, leading many young people to conclude that college is unnecessary for success.

However, this conclusion ignores the much larger number of college dropouts who failed and are now working ordinary jobs. Their stories are never reported because failure doesn't generate headlines. Only the survivors — the rare success cases — receive coverage.

By examining only successful cases, people draw conclusions from a tiny, non-representative slice of reality. This makes risky paths look much more promising than they actually are statistically.

Task 4: Lecture Only（4題）

タスク形式

• Lecture: 教授が学術概念とその具体例を 60-90 秒で説明
• Question: 教授が説明した概念と二つの例を要約
• 準備 20 秒、回答 60 秒

共通テンプレ

[Introduce concept] In the lecture, the professor explains the concept of [X], which refers to [definition].

[Example 1] To illustrate, the professor first describes [example 1]. In this case, [explanation].

[Example 2] The professor also gives a second example: [example 2]. Here, [explanation].

[Wrap-up] These two examples demonstrate how [X] operates in practice.

Q-T4-1: Symbiotic Relationships

Lecture excerpt:

"Today I want to talk about symbiotic relationships. A symbiotic relationship is a long-term biological interaction between two different species. There are several kinds, but I'll focus on two: mutualism and parasitism.

First, mutualism. This is when both species benefit from the relationship. A classic example is the relationship between bees and flowering plants. Bees gather nectar from flowers — that's their food — and in the process, they unintentionally carry pollen from one flower to another, helping the plants reproduce. Both species gain: the bees get food, and the plants get fertilized. Without each other, both would struggle to survive in the way they do.

Now, parasitism is the opposite. Here, one species benefits while harming the other. A common example is the tapeworm in mammals. The tapeworm lives in the intestines of an animal — say, a cow or a human — and absorbs nutrients from the host's digestive system. The tapeworm gains food and shelter, but the host suffers from nutrient loss and sometimes serious illness. There's no mutual benefit; only the parasite gains, while the host pays the cost."

Model Answer (136 words):

In the lecture, the professor explains the concept of symbiotic relationships, which are long-term biological interactions between two different species. The professor focuses on two specific types: mutualism and parasitism.

First, the professor describes mutualism using bees and flowering plants. Bees collect nectar from flowers as food, and while doing so, they transfer pollen between flowers. This helps the plants reproduce. Both species benefit — bees get nutrition, and plants are pollinated — making the relationship beneficial for both.

Second, the professor describes parasitism using the example of tapeworms. A tapeworm lives in the intestines of a host animal, such as a cow or human, absorbing nutrients from the host's food. The tapeworm benefits, but the host loses nutrients and may become ill.

These two examples illustrate the contrasting outcomes possible in symbiotic relationships.

Q-T4-2: Two Types of Memory

Lecture excerpt:

"We're going to discuss two important types of long-term memory today: explicit memory and implicit memory.

Explicit memory, also called declarative memory, is the kind of memory we can consciously recall and put into words. It includes things like facts and personal events. For example, if I ask you what year you graduated from high school, you can think about it and tell me. If I ask you to name the capital of France, you can. These are explicit memories — you can declare them.

Now, implicit memory is different. It's memory that influences your behavior without conscious thought. The clearest example is riding a bicycle. If you learned to ride as a child, you don't actively think about how to balance, how to pedal, when to turn the handlebars. Your body just remembers. Even if you haven't ridden in ten years, you'd probably get back on and ride within minutes. You can't easily put this knowledge into words — try explaining how to balance on a bike. It's hard. That's because the memory isn't stored in declarative form; it's procedural, embedded in your motor skills."

Model Answer (138 words):

In the lecture, the professor explains two types of long-term memory: explicit memory and implicit memory.

First, explicit memory, also called declarative memory, refers to memories we can consciously recall and verbalize. The professor gives examples like remembering the year you graduated from high school, or knowing the capital of France. These are facts you can think about and state directly. They are conscious and putable into words.

Second, implicit memory works differently. It influences behavior without conscious effort. The professor illustrates this with riding a bicycle. Once learned, a person can ride without actively thinking about balance, pedaling, or steering. Even after years without practice, the skill returns quickly. However, this knowledge cannot easily be put into words.

These two examples demonstrate the difference between consciously accessible memory and procedural memory embedded in behavior.

Q-T4-3: Two Strategies for Plant Defense

Lecture excerpt:

"Plants can't run from predators, so they've evolved sophisticated chemical and physical defenses. Today let me focus on two: physical deterrents and chemical compounds.

Physical deterrents are external structures that make plants harder to eat or damage. Take cacti, for example. Cacti have evolved sharp spines all over their surface. These spines serve two purposes: they discourage animals from eating the plant, and they reduce water loss by reducing surface area exposed to wind and sun. A herbivore that tries to bite into a cactus typically gets hurt, learns the lesson, and avoids cacti from then on. So the spines work as a passive but very effective defense.

Chemical defenses are more subtle but equally powerful. Many plants produce toxic compounds that deter or harm animals that try to eat them. A famous example is tobacco. Tobacco leaves contain nicotine, which is highly toxic to insects in small amounts. When an insect bites into a tobacco leaf, the plant rapidly increases nicotine production at the bite site. The insect either becomes sick and stops feeding, or in extreme cases, dies. This kind of inducible chemical defense is widespread in plants and is often invisible to humans, who experience nicotine as a stimulant rather than a poison."

Model Answer (140 words):

In the lecture, the professor explains two main types of plant defenses against predators: physical deterrents and chemical compounds.

First, the professor describes physical deterrents using cacti. Cacti have evolved sharp spines covering their surface. These spines serve two functions: they discourage herbivores from eating the plant, and they also reduce water loss by limiting exposed surface area. Animals that attempt to bite into a cactus get hurt and learn to avoid it, making the defense passive but effective.

Second, the professor describes chemical defenses using tobacco. Tobacco leaves contain nicotine, which is highly toxic to insects. When an insect begins eating a leaf, the plant rapidly increases nicotine production at the bite site. The insect becomes sick or dies, halting the damage.

These two examples show how plants protect themselves through both physical and chemical strategies.

Q-T4-4: Two Pricing Strategies in Business

Lecture excerpt:

"Companies use various pricing strategies depending on their goals. Today I'll discuss two: penetration pricing and skimming pricing.

Penetration pricing is when a company enters a market with a low price to gain customers quickly. The idea is to undercut competitors, attract a large customer base, and then maintain or even slowly raise prices once you've established market share. For example, when streaming services like Netflix first expanded internationally, they offered prices much lower than local cable subscriptions. They lost money on each subscriber initially, but they gained millions of users who became loyal — and once Netflix was the dominant streaming platform in many markets, they gradually raised their subscription prices. This strategy works well when customer loyalty is sticky and when scale matters.

Skimming pricing is the opposite. It involves launching a product at a high price to maximize early revenues from customers who really want it, then gradually lowering the price as time passes. A classic case is Apple's iPhone. Each new iPhone launches at a premium price targeting enthusiastic early adopters who'll pay a lot for the latest. Then, as new models come out, older models drop in price for the rest of the market. This strategy works well when you have a strong brand and a clear technological lead."

Model Answer (142 words):

In the lecture, the professor explains two business pricing strategies: penetration pricing and skimming pricing.

First, penetration pricing involves entering a market with a deliberately low price to attract many customers quickly. The professor uses Netflix as an example. When Netflix expanded internationally, it priced its service much lower than local cable, accepting initial losses to build a loyal user base. Once Netflix became dominant, it gradually raised prices.

Second, skimming pricing is the opposite. A company launches a product at a high price to maximize revenue from enthusiastic early adopters, then lowers prices over time. The professor uses Apple's iPhone as an example. Each new iPhone is priced high at launch, targeting customers willing to pay a premium. Older models then become cheaper for the broader market.

These two examples show contrasting approaches: building share through low prices vs. capturing premium first.

復習・進捗管理

Speaking のスコアリング目安

26+/30 を目指す: Task 1 で 3-4、Tasks 2-4 で 3-4 を安定的に取る。

学習サイクル

録音→自己評価チェックリスト

## YYYY-MM-DD Task X 録音
- [ ] 時間内に終えた（45/60 秒）
- [ ] フィラー (um, uh) が 5 回以下
- [ ] 沈黙 3 秒以上が 0 回
- [ ] テンプレフレーズが少なくとも 3 つ自然に使えた
- [ ] 文の途中で詰まらず最後まで言い切れた
- [ ] 主張・理由・例が明確
- [ ] 文法的に正しい文が大半
- [ ] 語彙が同じ単語の繰り返しでない

すべて ✓ になるまで同じ題を繰り返す。

高頻度・高得点フレーズ集

Task 1 用

• "I strongly prefer X over Y for two main reasons."
• "Let me illustrate with a personal example."
• "From my experience, X has clear advantages."
• "While Y has some merits, X is more practical for me."

Task 2 用

• "The university has decided to..."
• "The man / woman strongly opposes / supports this decision."
• "His first reason is that..., specifically..."
• "He further argues that..."

Task 3 用

• "The reading explains the concept of X, which refers to..."
• "The professor illustrates this with the example of..."
• "Specifically, in this case..."
• "This example clearly demonstrates..."

Task 4 用

• "The professor discusses two types of X."
• "First, the professor describes..."
• "To illustrate this, the professor uses the example of..."
• "These examples show how X operates."

録音環境

• スマホの録音アプリで十分
• 無音環境（声が反響しないクローゼット内など）
• 1 ヶ月後に最初の録音と比較 → 進歩を実感

補強リソース

• TPO (TOEFL Practice Online)：本番形式練習
• NoteFull / TST Prep：YouTube で無料テンプレ動画
• iTalki / Cambly：英語教師との 1:1 レッスン（週 1-2 回）
• シャドーイング素材：BBC 6 Minute English / VOA Learning English