1. From the text we know that ________ made the hamsters feel depressed.

　　A. the amount of the water

　　B. the color of the light

　　C. the loss of pleasure

　　D. the level of energy

　　2. What was the purpose of the experiment on hamsters?

　　A. To show how well they slept.

　　B. To see how much sugary water they drank.

　　C. To explain why they liked dark colors.

　　D. To find out what caused the depression on them.

　　3. The author explains the clinical depression by ________.

　　A. reporting an experiment process

　　B. presenting research data

　　C. setting down general rules

　　D. giving his own experience

　　4. Where can we probably find the text?

　　A. In a science magazine.

　　B. In a physics textbook.

　　C. In a tourist guidebook.

　　D. In an official announcement.

　　答案与解析

　　【文章大意】

　　本文是一篇科普说明文。文章主要介绍了晚上光线的颜色和临床抑郁症的密切关系。通过对一组仓鼠的试验，结果表明蓝色光和白色光是抑郁症的诱因；而红色光则与抑郁症的关系不密切。

　　1. 答案

　　B

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