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B.should have happenedC.could have happenedD.must have happened【答案】 D 【解析】【分析】句意:——湯姆上班從來(lái)不遲到,他今天為什么缺席?——他一定是發(fā)生了什么事情。情態(tài)動(dòng)詞+動(dòng)詞原形表示對(duì)現(xiàn)在的推測(cè)和判斷,must表示把握性很大的推測(cè),must have done “一定已經(jīng)發(fā)生了某事”,should have done,表示本應(yīng)該發(fā)生某事而實(shí)際上沒(méi)有發(fā)生,could have done表示本可以做過(guò)某事,根據(jù) Tom is never late for work. Why is he absent today? 可知他一定是發(fā)生了某事,故選D。 【點(diǎn)評(píng)】本題考查情態(tài)動(dòng)詞。熟記情態(tài)動(dòng)詞+have done的結(jié)構(gòu)和用法。14.Seeing their teacher into the classroom,they stopped at once. A.walk。 tellingB.entering。 to speakC.enter。 to tellD.walking。 talking【答案】 D 【解析】【分析】句意:看到他們的老師走進(jìn)教室,他們立刻停止了談話(huà)。see sb. doing ,走進(jìn)用walk into。 stop doing ,stop to do sth,停下去做某事。談話(huà)是他們正在做的事情,看見(jiàn)老師就停下不說(shuō),用stop doing sth。故選D?!军c(diǎn)評(píng)】本題考查動(dòng)詞辨析和固定搭配,注意掌握see sb. doing 。15.—_______ a teacher is great.—I think so. Some of the young people want _______ the children in the poor areas.A.Being。 teachingB.To be。 teachingC.Being。 to teachD.Be。 to teach【答案】 C 【解析】【分析】考查非謂語(yǔ)動(dòng)詞的用法。首句意為“做老師是很棒的”;答語(yǔ)考查want to do sth. ,故選C。16.— Smart phones are more and more popular now.— So they are. But they still ________ too much.A.payB.costC.takeD.spend【答案】 B 【解析】【分析】四個(gè)選項(xiàng)均為花費(fèi)的意思。固定搭配為:①sb. pay (錢(qián)) for 。②sth. cost sb. (錢(qián)) 某物花費(fèi)某人多少錢(qián)。③It takes sb. (錢(qián)/時(shí)間) to do 。④sb. spend (錢(qián)/時(shí)間)on 。句意:智能手機(jī)現(xiàn)在越來(lái)越流行?!前?,的確如此。但是它們還是太貴了。橫線前主語(yǔ)為they,指代智能手機(jī),即主語(yǔ)為某物,故選B?!军c(diǎn)評(píng)】此題考查花費(fèi)短語(yǔ)的固定搭配,平時(shí)要多總結(jié)并熟記。17.I39。m afraid that this type of energy will if we continue to waste it. A.run outB.break outC.e downD.fall down【答案】A 【解析】【分析】句意:恐怕這種類(lèi)型的能源將耗盡,如果我們繼續(xù)浪費(fèi)它的話(huà)。A.run out 用完,耗盡; B.break out爆發(fā);C.e down 降落,下來(lái);D.fall down跌倒,失敗。結(jié)合句意可知,答案為A。【點(diǎn)評(píng)】此題考查動(dòng)詞的固定搭配。18.Mary is tired of learning because she is ________ to do better than she can, both at school and at home.A.thoughtB.expectedC.hopedD.helped【答案】 B 【解析】【分析】句意:瑪麗疲于學(xué)習(xí),因?yàn)樗诩依锖蛯W(xué)校被期待著做得更好。think不跟不定式;expect sb to d