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children prefer to eat sweet chocolate _____ it’s not good for their health.A.because B.if C.when D.though【答案】D【解析】【詳解】句意:有些孩子喜歡吃甜巧克力,雖然這對(duì)他們的健康不好??疾閺膶龠B詞辨析。A. because因?yàn)椋籅. if假如;C. when什么時(shí)候;D. though雖然、盡管。根據(jù)句子前后意思的對(duì)比,可知孩子喜歡吃甜巧克力和對(duì)健康不好兩者構(gòu)成一種讓步關(guān)系,表示盡管知道這樣做不好但仍然這樣去做,結(jié)合選項(xiàng)只有although有這種含義,后面引導(dǎo)一個(gè)讓步狀語(yǔ)從句,故答案選D。26.—I’m busy with my schoolwork these days.—That’s great! You won’t get good grades ______ you work hard.A.if B.becauseC.unless D.a(chǎn)fter【答案】C【解析】試題分析:句意:這些天我忙著學(xué)校工作。那太好了,除非你努力工作,否則你不會(huì)取得好成績(jī)。A. if如果; B. because因?yàn)椋?C. unless除非; D. after在……之后,根據(jù)句意此題選C??键c(diǎn):考查連詞的用法27.Julie didn’t leave her office _____ the police arrived.A.however B.whenever C.while D.until【答案】D【解析】試題分析:句意: 直到警察到來(lái),朱莉才離開(kāi)辦公室. A. however然而;B. whenever無(wú)論何時(shí);C. while而;D. until直到;根據(jù)句意,故選D??键c(diǎn):考查副詞的用法。28.___________ she couldn’t see his face, she could tell by his voice that he was young.A.Unless B.If C.Because D.Though【答案】D【解析】【詳解】句意:雖然她看不見(jiàn)他的臉,但是她能夠通過(guò)聲音分辨出他很年輕。A. Unless除非;B. If如果;C. Because因?yàn)?;D. Though盡管。根據(jù)語(yǔ)境以及上下文,本題考查的是連詞的用法。結(jié)合句意可知,在這里兩個(gè)句子之間存在一個(gè)相反的讓步關(guān)系,though/although/even though雖然;盡管,引導(dǎo)讓步狀語(yǔ)從句,符合句意。故答案選D。29.They will lose the game _______ they try their best.A.unless B.once C.since D.a(chǎn)fter【答案】A【解析】【詳解】試題分析:句意:他們會(huì)輸?shù)舯荣惖模撬麄儽M自己最大的努力。lose the game 輸?shù)舯荣?,try one’s best 盡最大的努力。 A. unless 除非; B. once 一次;C. since 因?yàn)椋?D. after 在…之后,根據(jù)題意可知此句是unless引導(dǎo)的條件狀語(yǔ)從句,故選A。30.— It’s reported that the plastic pollution is harming the ocean.— I saw the report in the newspaper at breakfast. It will be worse _________ stronger laws are made.A.since B.a(chǎn)fter C.until D.unless【答案】D【解析】【詳解】句意:據(jù)報(bào)道,塑料污染正在侵害著海洋。早餐時(shí),我在報(bào)紙上看到了這篇報(bào)道。除非有更強(qiáng)有力的法律制定出來(lái),否則情況會(huì)越發(fā)惡劣??疾檫B詞。A. since自從;B. after在……之后;C. until直至,直到……時(shí)(為止);D. unless除非。unless引導(dǎo)條件狀語(yǔ)從句時(shí),其謂語(yǔ)要用現(xiàn)在時(shí)表示將來(lái)意義。且結(jié)合句意,前后意思對(duì)比。故選D。