2014年职称英语综合类的练习题之阅读理解2_职称英语阅读理解

　　A it controls when we wake，when we eat and when we sleep.

　　B it has a cycle of 24 hours.

　　C it is a cycle also called circadian rhythm.

　　D it can alarm any time during 24 hours.

　　2. What is implied in the second paragraph?

　　A Young childrens biological clock has the same rhythm with that of the teenagers.

　　B People after puberty begin to go to bed earlier due to the change of the biological clock.

　　C Children before puberty tend to fall asleep earlier at night than adolescents.

　　D Teenagers go to bed later than they used to due to the light from the computer screen.

　　3. In the third paragraph the author wants to tell the reader that

　　A it is natural for teenagers to stay up late and get up late.

　　B staying up late has a bad effect on teenagers ability to think and learn.

　　C during puberty most teenagers experience a kind of gray cloud.

　　D it is hard for teenagers to get out of bed in the morning.

　　4. Which of the following statements is NOT true according to the fourth and fifth paragraphs?

　　A Our biological clock resets itself automatically.

　　B light gets through our eyes and resets our biological clock.

　　C Our internal clock as well as the alarm clock can be reset automatically.

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