【題目】 In today’s world, sleep experts often say that for a better night’s rest, Americans should turn o1 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 s4. In the study, the researchers let volunteers read, play games and watch movies on a screen for different time while measuring(測(cè)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 s8 results. And researchers say that may not only cause sleeplessness, but 9 raise the risk of obesity(肥胖癥), 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】

1off

2active

3kinds

4sleep

5how

6sitting

7used

8similar

9also

10less

【解析】

本文建議大家為了更好的睡眠,應(yīng)該在睡前關(guān)閉一些電子產(chǎn)品,并且詳細(xì)介紹了這些電子產(chǎn)品對(duì)人們的影響。

1句意:美國人在睡前應(yīng)該關(guān)閉他們的智能手機(jī)或iPad。

此處構(gòu)成動(dòng)詞短語turn off作謂語,意為“關(guān)閉”,故答案為off

2句意:這樣的電子產(chǎn)品讓大家的大腦更活躍,進(jìn)而會(huì)影響到人們的睡眠。

此處作賓語補(bǔ)足語,應(yīng)該用形容詞;act行動(dòng),是動(dòng)詞,其形容詞為active,意為“積極的,活躍的”,故答案為active

3句意:但是根據(jù)最近的一項(xiàng)調(diào)查,超過90%的美國人經(jīng)常在睡前還在使用電腦或其他電子產(chǎn)品。

此處作量詞量化其后名詞electronic products,可知也用名詞復(fù)數(shù);kind種類,是名詞,故答案為kinds

4句意:研究人員發(fā)現(xiàn),夜間一些電子產(chǎn)品的人造光會(huì)減少幫助睡眠的大腦化學(xué)物質(zhì)。

此處和其前to構(gòu)成動(dòng)詞不定式,應(yīng)該用原形;根據(jù)句意和首字母s,可知是sleep,意為“睡眠”,是動(dòng)詞,故答案為sleep

5句意:在這項(xiàng)研究中,研究人員讓志愿者在屏幕上閱讀、玩游戲和看電影,同時(shí)測(cè)量他們的眼睛接收到多少光線。

此處構(gòu)成how much,引導(dǎo)一個(gè)賓語從句,意為“多少”,故答案為how

6句意:他們發(fā)現(xiàn)晚上在明亮的屏幕前坐兩個(gè)小時(shí)使睡眠化學(xué)水平降低了約22%。

此處作介詞of的賓語,應(yīng)該用動(dòng)名詞形式;sit坐,是動(dòng)詞,故答案為sitting

7句意:然后研究人員研究了那些經(jīng)常在晚上使用電腦的大學(xué)生。

此處作謂語,根據(jù)主句謂語動(dòng)詞studied用了一般過去時(shí),可知此處也用一般過去時(shí);use使用,是動(dòng)詞,故答案為used。

8句意:他們得到了相似的結(jié)果。

此處作定語修飾其后名詞results,應(yīng)該用形容詞;根據(jù)句意和首字母s,可知是similar,意為“相似的”,是形容詞,故答案為similar。

9句意:研究人員說,這可能不僅會(huì)導(dǎo)致失眠,還會(huì)增加患肥胖癥、糖尿病和其他疾病的風(fēng)險(xiǎn)。

根據(jù)句子,可知此處構(gòu)成并列連詞not only…but also…,意為“不但……而且……”,故答案為also。

10句意:為了安全起見,研究人員建議我們應(yīng)該比以前少用電腦。

此處修飾其前動(dòng)詞use,應(yīng)該用副詞;根據(jù)其后than,可知用比較級(jí);little意為“少”,其比較級(jí)為less,故答案為less

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