Question

【題目】Some colors people see late at night could cause signs of the condition mental health experts call clinical depression(臨床抑郁癥). That was the finding of a study that builds on earlier study findings. They show that individuals who live or work in low levels of light overnight can develop clinical depression.

Doctors use the word clinical depression to describe severe form of depression. Signs may include loss of interest or pleasure in most activities, low energy levels and thoughts of death or suicide.

In the new study, American investigators designed an experiment that exposed hamsters（倉(cāng)鼠）to different colors. The researchers chose hamsters because they are nocturnal, which means they sleep during the day and are active at night. The animals were separated into four groups. One group of hamsters was kept in the dark during their night-time period. Another group was placed in front of a blue light, a third group slept in front of a white light, while a fourth was put in front of a red light. After four weeks, the researchers noted how much sugary water the hamsters drank. They found that the most depressed animals drank the least amount of water.

Randy Nelson, at Ohio State University, says animals that slept in blue and white light appeared to be the most depressed. “What we saw is that these animals didn’t show any sleep interruptions at all but they did mess up biological clock (生物鐘) genes and they did show depressive sign but if they were in the dim red light, they did not.” He says there’s a lot of blue in white light. This explains why the blue light and white light hamsters appear to be more depressed than the hamsters seeing red light or darkness.

【1】From the text we know that ________ made the hamster 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 tourist guidebook. B. In a physics textbook

C. In a science magazine. D. In an official announcement.

Answer 1

【答案】

【1】B

【2】D

【3】A

【4】C

【解析】

試題分析：本文為科普說(shuō)明文，介紹了對(duì)抑郁癥進(jìn)行研究的一個(gè)倉(cāng)鼠實(shí)驗(yàn)。

【1】B 細(xì)節(jié)理解題。根據(jù)第三段第一句中的“.....designed an experiment that exposed hamsters to different colors”以及本段中關(guān)于不同顏色的光線對(duì)倉(cāng)鼠的影響的描述可知，光線的顏色導(dǎo)致倉(cāng)鼠感到抑郁，故選B。

【2】D 細(xì)節(jié)理解題。根據(jù)本文最后一句“This explains why the blue light and white light hamsters appear to be more depressed than the hamsters see red light or darkness”可知，用倉(cāng)鼠做實(shí)驗(yàn)的目的是弄清光線的顏色是否會(huì)導(dǎo)致抑郁癥，故選D。

【3】A。寫(xiě)作手法題。根據(jù)第三段中敘述通過(guò)倉(cāng)鼠進(jìn)行試驗(yàn)以證明光線的顏色與抑郁癥的關(guān)系可知，作者是通過(guò)報(bào)告實(shí)驗(yàn)過(guò)程來(lái)解釋抑郁癥的，故選A。

【4】C 推理判斷題。通讀全文可知，本文主要介紹了抑郁癥與光線的關(guān)系。研究表明，晚上所見(jiàn)到的光線的的顏色和抑郁癥有著密切的關(guān)系：藍(lán)色光和白色光成為抑郁癥的誘因。由此可知，這是一篇科普說(shuō)明文，可能選自科技雜志，故選C。