咖啡虽好，不要贪杯

吉林 姜华美

主题语境：日常生活 篇幅：315词 建议用时：6分钟

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

2The National Health Service says that caffeine drinks,including coffee,are unsuitable for the young.Caffeine is a stimulant(兴奋剂),which means it makes people feel more alert and awake for a short time,but it can also make it hard to sleep,which affects concentration.Coffee is a drink for adults.Although there hasn't been much research on how coffee affects young people,lots of studies show the impact it can have on adults.Caffeine 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 for tests or exams.Some scientists think caffeine is addictive.In other words,the more of it you drink,the more you will need.

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

4But why focus on coffee?Young people already get caffeine from other drinks like cola,tea and energy drinks.Caffeine is also found in chocolate and some medicines.Rather than telling young people not to drink coffee,it's better to educate them about caffeine.Then they can keep an eye on how much caffeine they're getting from all their food and drink.Keeping teenagers away from coffee won't 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 feel stressed,worn out and unable to concentrate.咖啡因会影响血压和干扰睡眠，这会让人感到紧张、疲惫和无法集中注意力。

【点石成金】此句的主干为Caffeine affects blood pressure and disturbs sleep；which can make people feel stressed,worn out and unable to concentrate为which引导的非限制性定语从句，修饰前面整个句子。