【题目】 In today’s world, sleep experts often say that for a better night’s rest, Americans should turn o【1】 their smart phones or iPads before sleeping. Such electronic products make the brain more 【2】(act), and then influence their sleep. But according to a latest survey, more than 90% of Americans often use a computer or some other 【3】(kind) of electronic products in the hour before bed.
Researchers find that man-made light from some electronic products at night may reduce the brain chemicals that help to s【4】. In the study, the researchers let volunteers read, play games and watch movies on a screen for different time while measuring(测量) 【5】 much light their eyes received. They found that two hours of 【6】(sit) before a bright screen at night reduced the sleep chemical levels by about 22%.
Then the researchers studied the college students who often 【7】(use) computers at night. They got the s【8】 results. And researchers say that may not only cause sleeplessness, but 【9】 raise the risk of obesity(肥胖症), diabetes(糖尿病)and other diseases.
To be on the safe side, the researchers suggest that we should use computer 【10】(little) than before, or turn down our screens as much as possible before sleeping.
【答案】
【1】off
【2】active
【3】kinds
【4】sleep
【5】how
【6】sitting
【7】used
【8】similar
【9】also
【10】less
【解析】
本文建议大家为了更好的睡眠,应该在睡前关闭一些电子产品,并且详细介绍了这些电子产品对人们的影响。
【1】句意:美国人在睡前应该关闭他们的智能手机或iPad。
此处构成动词短语turn off作谓语,意为“关闭”,故答案为off。
【2】句意:这样的电子产品让大家的大脑更活跃,进而会影响到人们的睡眠。
此处作宾语补足语,应该用形容词;act行动,是动词,其形容词为active,意为“积极的,活跃的”,故答案为active。
【3】句意:但是根据最近的一项调查,超过90%的美国人经常在睡前还在使用电脑或其他电子产品。
此处作量词量化其后名词electronic products,可知也用名词复数;kind种类,是名词,故答案为kinds。
【4】句意:研究人员发现,夜间一些电子产品的人造光会减少帮助睡眠的大脑化学物质。
此处和其前to构成动词不定式,应该用原形;根据句意和首字母s,可知是sleep,意为“睡眠”,是动词,故答案为sleep。
【5】句意:在这项研究中,研究人员让志愿者在屏幕上阅读、玩游戏和看电影,同时测量他们的眼睛接收到多少光线。
此处构成how much,引导一个宾语从句,意为“多少”,故答案为how。
【6】句意:他们发现晚上在明亮的屏幕前坐两个小时使睡眠化学水平降低了约22%。
此处作介词of的宾语,应该用动名词形式;sit坐,是动词,故答案为sitting。
【7】句意:然后研究人员研究了那些经常在晚上使用电脑的大学生。
此处作谓语,根据主句谓语动词studied用了一般过去时,可知此处也用一般过去时;use使用,是动词,故答案为used。
【8】句意:他们得到了相似的结果。
此处作定语修饰其后名词results,应该用形容词;根据句意和首字母s,可知是similar,意为“相似的”,是形容词,故答案为similar。
【9】句意:研究人员说,这可能不仅会导致失眠,还会增加患肥胖症、糖尿病和其他疾病的风险。
根据句子,可知此处构成并列连词not only…but also…,意为“不但……而且……”,故答案为also。
【10】句意:为了安全起见,研究人员建议我们应该比以前少用电脑。
此处修饰其前动词use,应该用副词;根据其后than,可知用比较级;little意为“少”,其比较级为less,故答案为less。
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