【題目】 How much time do you spend in front of a screen every day？ If your answer is about one hour，then maybe you are one of the ____ teenagers in the world．

Scientists did a ____． They asked students aged 13 to 18 how long it ____ them to have fun on phones and computers． They also asked about ____ feelings of happiness． They found that those who spend more time on their smart phones are unhappier． "Spend no more than two hours a day on digital media（電子產(chǎn)品），___ try to spend more time with friends and on exercise． These two activities bring greater happiness．" Jean Twenge， the scientist who led the study ，said．

【1】A. happyB. happierC. happiest

【2】A. surveyB. discoveryC. test

【3】A. takesB. spendsC. costs

【4】A. yourB. ourC. their

【5】A. butB. andC. or

【答案】

【1】C

【2】A

【3】A

【4】C

【5】B

【解析】

這篇短文主要講述了人們花費(fèi)在屏幕上的時(shí)間的一個(gè)調(diào)查。

【1】句意：如果你的答案是大約一個(gè)小時(shí)，那么你可能是這世界上最幸福的青少年了。

A幸福的，B更幸福的，C最幸福的。One of+the+形容詞最高級+名詞復(fù)數(shù)，表示……最之一。根據(jù)題意，故選C。

【2】句意：科學(xué)家們做了一個(gè)調(diào)查。

A.調(diào)查； B發(fā)現(xiàn)；C測試；科學(xué)家們應(yīng)該做的是調(diào)查。故選A。

【3】句意：他們問13﹣18歲的學(xué)生玩電腦和手機(jī)會花費(fèi)他們多少時(shí)間。

三個(gè)選項(xiàng)都有花費(fèi)（時(shí)間）的意思，take的用法：It takes sb +時(shí)間 to do sth．spend的用法：sb spend +時(shí)間+（in）doing sth．cost的用法：（doing） sth． costs （sb．）+時(shí)間，根據(jù)題意，故選A。

【4】句意：他們還問他們的幸福感。

此處their指的是前文的students，A你（們）的；B我們的；C.他們的。根據(jù)題意，故選C。

【5】句意：每天在電子產(chǎn)品上花費(fèi)的時(shí)間不要超過兩個(gè)小時(shí)，并且嘗試著花費(fèi)更多的時(shí)間在朋友或鍛煉上。

A但是；B.和，又； C或者；前后兩個(gè)句子是并列關(guān)系。故選B。

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