答案 B [主旨大意题。根据全文内容尤其是第一段“Sleeping in a room with too much light has been linked to an increased risk of gaining weight,a study shows.”可知,本文主要讲述的是在光线太强的房间睡觉会有增加肥胖的风险。]
2.What will make the researchers go on their scientific investigation?
A.Light exposure.
B.The interesting findings.
C.More people with obesity.
D.Darker bedrooms' effect.
答案 B [细节理解题。根据第三段内容可知,对于很多人来说,夜间曝光与超重以及肥胖有关,但没有足够的证据表明,如果将房间灯光调暗,体重会有变化。但是这个发现很有趣,足以促使进一步的科学研究。]
3.The author writes the fourth paragraph in order to show ________.
A.manmade light can disrupt the body clock
B.manmade light is a product of evolution
C.the body clock won't be disrupted by anything
D.the body clock can change our mood and physical strength
答案 A [细节理解题。根据第四段内容可知,作者写本段是为了说明人造光会干扰生物钟。]
4.What's Prof DerkJan Dijk's attitude towards the dark room?
A.Negative.
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