Question

【题目】根据短文理解，选择正确答案。
You may have heard adults say they are uncomfortable in the morning without a cup of coffee. One reason they may feel that way is that coffee contains caffeine(咖啡因). Caffeine appears naturally in coffee, tea, and cocoa beans, which are used to make chocolate. But now food makers are adding it to many products, from potato chips to water.
The US government is especially worried about the problem. That's why the Food and Drug Administration (FDA) is studying the health effects of caffeine on young people. Studies show that too much caffeine can make people nervous and unable to sleep. What's more, caffeine is habit-forming. Those who consume it regularly and stop suddenly may experience headaches and feel tired.
One of the biggest concerns is the large amount of caffeine added to so-called energy drinks, like Red Bull. A 12-ounce can of cola has about 35 milligrams of caffeine. A similar serving of Red Bull contains more than three times that amount.
The Institute of Medicine is also working on caffeine-safety measures. “Teenagers should not drink beverages that contain caffeine. They should be aware of caffeine's effects on health and on how the brain works. Take, for example, teenagers who consume caffeine to stay awake and study for a test. They will remember less of what they just studied,” said Stallings, a member of the institute.
Companies that make products with added caffeine claim they do not advertise them to kids. However, there is no law to stop children from buying them. So the FDA needs to set limits on caffeine, especially in energy drinks. As for added caffeine in foods, the government should just say no. If not, the amount of caffeine should be printed on food labels to remind consumers. The government must do that.
Doctors say kids should avoid caffeine. If you need extra energy, try these natural boosters: eat right, exercise, and get plenty of sleep.
（1）What is the US government particularly concerned about?
A.The fact that coffee contains caffeine.
B.The practice of adding caffeine to foods.
C.The measures of avoiding caffeine's effects.
D.The practice of using caffeine to make chocolate.
（2）Red Bull is listed in the third paragraph as an example of _____.
A.caffeine's effects on health
B.teenagers' addiction to caffeine
C.drinks which contain much caffeine
D.people's concern about teenagers' health
（3）Paragraph 5 is mainly about _____.
A.the measures of protecting teenagers from caffeine's effects
B.the process of the government's controlling the use of caffeine
C.the government's responsibility of taking care of teenagers
D.the risk of buying products containing caffeine nowadays
（4）The author may agree that _______.
A.headaches and feeling tired are common in teenagers
B.food makers don't add much caffeine to many products now
C.caffeine is good and useful for teenagers' study
D.getting enough sleep can make people energetic

Answer 1

【答案】
（1）B
（2）C
（3）A
（4）D
【解析】文章讲述了现在许多食物和饮料中添加咖啡因或添加过量这一现象，及其对身体的影响，尤其是对儿童的影响。呼吁政府加以管理。

⑴细节推理。根据第一段最后But now food makers are adding it to many products, from potato chips to water.和第二段首句The US government is especially worried about the problem.可知美国政府对食物和饮料中添加咖啡因问题很担心，所以答案是B.

⑵细节推理。根据第三段One of the biggest concerns is the large amount of caffeine added to so-called energy drinks, like Red Bull.可知Red Bull就是一种含许多咖啡因的功能饮料，所以答案是C.

⑶推理判断。根据第五段中So the FDA needs to set limits on caffeine, especially in energy drinks. As for added caffeine in foods, the government should just say no.和The government must do that.可知本段主要讲保护青少年免受咖啡因影响的具体措施，所以答案是A.

⑷推理判断。根据最后一句If you need extra energy, try these natural boosters: eat right, exercise, and get plenty of sleep.可知作者主张合理饮食、加强锻炼和保证睡眠来增加能量，所以答案是D.