姜華美

咖啡因的過(guò)多攝入對(duì)人體有不利影響，因此我們應(yīng)避免攝入過(guò)多。

主題語(yǔ)境：日常生活?篇幅：315詞?建議用時(shí)：6分鐘

1 Caffeine is in coffee beans， which are ground to make coffee. Although caffeine canbe part of a healthy diet， too much of it can be bad for your health. Coffee from coffee shopscan be high in caffeine. Research shows that a cup of coffee from one popular chain of coffeeshops contains 277 milligrams of caffeine. A cup of tea has around 22 milligrams.

2 The National Health Service says that caffeine drinks， including coffee， are unsuitablefor the young. Caffeine is a stimulant （興奮劑）， which means it makes people feelmore alert and awake for a short time， but it can also make it hard to sleep， which affectsconcentration. Coffee is a drink for adults. Although there hasnt been much research onhow coffee affects young people， lots of studies show the impact it can have on adults. Caf?feine affects blood pressure and disturbs sleep， which can make people feel stressed，worn out and unable to concentrate. This would be bad news for teenagers preparing fortests or exams. Some scientists think caffeine is addictive. In other words， the more of it youdrink， the more you will need.

3 An occasional coffee is fine. In small doses， caffeine can make people feel more alertand increase mental energy. No wonder lots of busy teenagers like coffee. Studies haveshown that adults who regularly drink coffee have a lower risk of developing heart disease.

4 But why focus on coffee？ Young people already get caffeine from other drinks likecola， tea and energy drinks. Caffeine is also found in chocolate and some medicines. Rather?than telling young people not to drink coffee， its better to educate them about caffeine.Then they can keep an eye on how much caffeine theyre getting from all their food anddrink. Keeping teenagers away from coffee wont make them free of caffeine.

Reading Check

Inference

1. Why does the author mention the caffeine content of a cup of tea？

A. To stress tea has little caffeine.

B. To prove tea is beneficial to us.

C. To tell us about the popularity of coffee.

D. To show coffee has more caffeine.

Gist

2. What does the author mainly intend to tell us in paragraph 2？

A. Caffeine can make you awake.

B. Coffee can make you energetic.

C. Caffeine drinks have harmful sides.

D. People have a preference for coffee.

Inference

3. Who needs a cup of coffee according to the text？

A. A child crying for sugar.

B. A writer staying up late.

C. A person feeling nervous.

D. A teenager preparing for an exam.

Language Study

Difficult sentence

Caffeine affects blood pressure and disturbs sleep， which can make people feelstressed， worn out and unable to concentrate. 咖啡因會(huì)影響血壓和干擾睡眠，這會(huì)讓人感到緊張、疲憊和無(wú)法集中注意力。

【點(diǎn)石成金】此句的主干為Caffeine affects blood pressure and disturbs sleep；whichcan make people feel stressed， worn out and unable to concentrate為which引導(dǎo)的非限制性定語(yǔ)從句，修飾前面整個(gè)句子。