【題目】There is bad news for students who like to use their mobile phones while they study. New research shows that students do not learn very well when they text. Researchers 【1】 （look）at 145 American high school students in the classroom. Some of the students used their mobile phones during class, while the others had their phones 【2】 (switch) off. The head researcher, Dr Jeffrey Kuznekoff, said students 【3】 did not use their mobile phones while the teacher was talking got 【4】 (high) scores on tests they took at the end of the class.

One of the biggest 【5】 (challenge) teachers have in the classroom is the non-stop battle of 【6】 (keep) students working because students were more absorbed in social media than learning. Many students felt they needed to be online and check messages even they had important work to do in class.

【7】 is very common for students to be 【8】 (physical) present in class, but mentally absent because they are using their mobiles. A study found that test scores increased 【9】 six percent after mobile phones 【10】 (ban) in class.

【答案】

【1】looked

【2】switched

【3】who/that

【4】higher

【5】challenges

【6】keeping

【7】It

【8】physically

【9】by

【10】were banned

【解析】

試題分析：文章針對(duì)學(xué)生課堂帶手機(jī)現(xiàn)象進(jìn)行了調(diào)查，結(jié)果告訴我們課堂帶手機(jī)影響學(xué)生成績(jī)。建議禁止學(xué)生課堂帶手機(jī)。

【1】looked.考查動(dòng)詞時(shí)態(tài)。此處講一次調(diào)查的具體情況，調(diào)查已經(jīng)發(fā)生且下文描述用的是過(guò)去時(shí)態(tài)，此處也用過(guò)去時(shí)，故填過(guò)去式looked。

【2】switched.考查動(dòng)詞時(shí)態(tài)。此處與前后句時(shí)態(tài)一致，講述調(diào)查的具體情況也用過(guò)去式，故填switched。

【3】who/that.考查定語(yǔ)從句。句中包含定語(yǔ)從句，先行詞是students，指人，在定語(yǔ)從句中作主語(yǔ)，要用關(guān)系代詞who/that引導(dǎo)，故填who/that。

【4】higher.考查形容詞比較級(jí)。此處指上課不用手機(jī)的學(xué)生比上課用手機(jī)的學(xué)生測(cè)試得分高，有比較的意思，故要用比較級(jí)，故填higher。

【5】challenges.考查名詞。one of+復(fù)數(shù)名詞，故填challenges。

【6】keeping.考查動(dòng)詞形式。Of是介詞，后面用動(dòng)詞-ing形式，指讓學(xué)生學(xué)習(xí)的戰(zhàn)斗，故填keeping。

【7】It.考查形式主語(yǔ)。句中It作形式主語(yǔ)，不定式to be physically present in class作真正主語(yǔ)，故填It。

【8】physically.考查副詞。此處修飾形容詞present要用副詞，指身體在教室。故填physically.

【9】by.考查介詞。increased by“增加了”，此處指分?jǐn)?shù)增加了6%，故填by。

【10】were banned.考查時(shí)態(tài)和語(yǔ)態(tài)。根據(jù)句意和increased可知用過(guò)去時(shí)態(tài)，句中mobile phones和動(dòng)詞ban是被動(dòng)關(guān)系，指手機(jī)在課堂上被禁止。故填were banned。

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