入舵市安恙阳光实验学校湖南2017高考英语暑假阅读理解选练（二）
【科普知识型---阅读理解】
Doctors sometimes prescribe light therapy to treat a form of depression in people who get too little morning sun. But too much light at other time may actually cau such mood disorders. Longlasting exposure to light at night brings depression, a new study finds, at least in animals.
The new data confirm obrvations from studies of people who work night shifts, says Richard Stevens of the University of Connecticut Health Centre. Mood disorders join a growing list of problems, including cancer, obesity and diabetes—that can occur when light throws life out of balance by disturbing the biological clock and its timing of daily rhythms.
In the new study, Tracy Bedrosian and Randy Nelson of Ohio State University expod mice to normal light and dark cycles for four weeks. For the next four weeks, half of the mice remained on this schedule, and the rest received continuous dim light throughout their
night. Compared with mice expod to normal nighttime darkness, tho getting dim light at night lost their strong preference for sweet drinks，“a sign they no longer get pleasure out of activities they once enjoyed，” Bedrosian says.
In a cond test, mice were clocked on how long they actively tried to escape a pool of water. Tho expod to night lights stopped struggling and just floated in the water, a sign of “behavioural despair”，10 times as long as the mice that had experienced normal nighttime darkness. All symptoms of depression disappeared within two weeks of the mice returning to a normal lightdark cycle, the rearchers report. The scientists also could quash the behavioural symptoms by injecting (注射)the brains of animals with a drug that prohibits the activity of certain molecules linked with human depression. This finding further suggests that light at night may cau something related to depression.
Human studies linking nighttime light and mood disorders are important but can't easily detect molecular underpinnings (分子结构三阶魔方公式新手图解)as animal studies can，says George Brainard of Thomas Jefferson University. The new work, he says, suggests that the change of the
biological clock by light at night can be “an extremely powerful force in regulating biology and behaviour”．
1．After being expod to continuous nighttime light六年级英语人教版，the mice ________．
A．changed their preferences
B．escaped from the water more eagerly
C．remained active as before
D．showed less interest in their favourites
2．What does the underlined word “quash” in Para. 4 probably mean?
A．Study. B．Predict. C．Ea. D．Cau.
3．We can learn from the last paragraph that ________．
A荷花教案．light at night may have practical value
B．the biological clock is beneficial to humans
C．human mood disorders cannot be healed easily
D．human studies are more important than animal studies
4．孕期缺铁What is the main idea of the passage?
一样的近义词A．Nighttime light may foster depression.
B．A drug has been found to cure mood disorders.
C．The study on animals can be applied to humans.
D．Human biological clock can be controlled by light.
【要点综述】光照疗法可以治疗抑郁症，但是，新的研究表明长期暴露于夜晚的灯光也可带来抑郁症，这项研究至少在动物身上得到了验证。
1．D 细节理解题。根据“宫廷狂欢Compared with mice expod to normal nighttime darkness，t
ho getting dim light at night lost their strong preference for sweet drinks…”可知，那些在夜晚持续接受暗淡灯光的老鼠失去了对于甜饮料的浓厚喜好，即没有那么喜欢甜饮料了，故选D项。
2．C 词义猜测题。通过原文quash前面also可以断定，quash的意思等于前面一句话的意思，即症状消失了，故选ea“缓解，减轻”。
3．A 推理判断题。根据最后一句可知，灯光可以影响生物钟，生物钟的改变可以影响行为，故选择A项。
4．A 主旨大意题。根据文章首段“Doctors sometimes prescribe light therapy to treat a form of depression in people who get too little morning sun.But too much light at other time may actually cau such mood disorders.”可知，本文主要讨论蒸馒头要多久nighttime light与mood disorder或匡衡读音depression的关系，故A项正确。
2016高考模拟题。阅读理解。
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
My three-year-old granddaughter, Tegan, went with her parents to a family gathering at the home of her other grandparents. Everyone was having a wonderful time visiting and catching up on all the latest family news.
Like most children, Tegan was having a good time playing with all the toys that were different from her own and that were kept for children to play with at her grandparents’ hou. In particular, Tegan had found a little tea t and had begun pretending that she was having a tea party. She t up all the place ttings and arranged her table with the great care and elegance that only a three-year-old can create. Meanwhile, her Daddy was engrosd in conversation, and as he continued to chat with his family, Tegan would hand him a cup of "tea". Her Daddy, who always tries to participate in her games, would pau for a few conds from his conversation, and say all the proper words and gestures for her tea party which would thrill Tegan. He would request two lumps of sugar. He would tell her how wonderful her tea tasted, and then he would continue his adult conversation with his family.
