【文章內(nèi)容簡介】 e was happy to get a gift from her friend, _________it was only a card.A．if . B．unless C．though D．because【答案】C【解析】【詳解】句意：她很高興從她的朋友那里得到一份禮物，雖然只是一張卡片?？疾檫B詞辨析。if如果，表?xiàng)l件；unless除非，表?xiàng)l件；推后盡管，表讓步；because因?yàn)?，表原因。本句是讓步狀語從句，根據(jù)句意結(jié)構(gòu)和語境，可知選C。20．My English teacher has taught English she came to the school.A．since B．a(chǎn)s C．when D．for【答案】A【解析】【詳解】考查連詞辨析，句意：我的英語老師自從來到這個(gè)學(xué)校就教英語．結(jié)合語境推斷句意是我的英語老師自從來到這個(gè)學(xué)校就教英語．，此句中的謂語動(dòng)詞用了現(xiàn)在完成時(shí)，本題設(shè)空處后面的時(shí)間狀語從句用了一般過去時(shí)，所以結(jié)合句意用現(xiàn)在完成時(shí)的標(biāo)志詞since引導(dǎo)，故選A21．You will fall behind others ______ you work hard.A．if B．unless C．though D．since【答案】B【解析】試題分析：句意：如果你不努力學(xué)習(xí)，你會(huì)落后別人。；B. If如果；C. Unless如果不； D. Though雖然。結(jié)合句意，故選B考點(diǎn)：考查連詞的用法.22．Would you like to go bike riding with us tomorrow? Sure, ____ I am busy.A．since B．unless C．when D．until【答案】B【解析】試題分析：句意：你想要明天和我們一起去劃船嗎？好的，如果我不忙我就去。A自從；B如果不；C當(dāng)……時(shí)候；D直到……才。根據(jù)句意，應(yīng)選B。考點(diǎn)：考查連詞。23．You39。d better get home earlier today we can go out for a big meal.A．in order to B．such that C．so that D．in order【答案】C【解析】句意：你最好今天早點(diǎn)回家，這樣我們就可以出去吃大餐了。A. in order to 為了，后跟動(dòng)詞原形；B. such that沒有此用法；C. so that為了，引導(dǎo)目的狀語從句；D. in order+that+從句，引導(dǎo)目的狀語從句。we can go out for a big meal表示目的的完整句子，所以使用連詞詞組so that。故選：C。24．（題文）I’m sure that you will succeed in the end ___________ you give up halfway.A．until B．till C．unless D．a(chǎn)lthough【答案】C【解析】試題分析：句意：如果你不半途放棄，我肯定你最終會(huì)成功的。A. until直到，表示時(shí)間；B. till 直到，表示時(shí)間；C. unless如果不，除非，表示條件；D. although雖然，盡管。表示讓步。如果不放棄，就會(huì)成功。故選C。考點(diǎn)：考查連詞用法辨析。25．If our government 　　　 pay attention to the safety of food, our health 　　　 in danger.A．isn’t。 is B．doesn’t。 will beC．won’t。 is D．isn’t。 will be【答案】B【解析】【詳解】句意：如果我們的政府現(xiàn)在不注意食品安全，我們的健康就會(huì)出于危險(xiǎn)之中。結(jié)合語境可知，本句主語描述的是將來某時(shí)進(jìn)行的動(dòng)作，故用一般將來時(shí)態(tài)。當(dāng)主句描述將來時(shí)態(tài)，if引導(dǎo)的條件狀語從句中用一般現(xiàn)在時(shí)態(tài)表示將來動(dòng)作，結(jié)合語境可知選B。26．Our world will get better and better each of us lives a greener life.A．before B．if C．though D．until【答案】B【解析】試題分析：句意：如果我們每一個(gè)人都過更綠色的生活，那么我們的世界將會(huì)變的越來越好。A. before在……之前，引導(dǎo)時(shí)間狀語從句；B. if 如果，引導(dǎo)條件狀語從句；C. though 盡管，雖然，引導(dǎo)讓步狀語從句；D. until直到……引導(dǎo)時(shí)間狀語從句。結(jié)合句意，故選B?？键c(diǎn)：考查連詞的用法。27．Cathy is afraid of the dog. She will run away _______she sees it.A．ever since B．a(chǎn)lthough C．a(chǎn)s soon as D．so that【答案】C【解析】【詳解】句意：凱西害怕狗，她一看到狗就跑了?？疾檫B詞辨析。A. ever since自從；B. although雖然、盡管；C. as soon as一…就；D. so that以便；所以。根據(jù)Cathy is afraid of the dog. 凱西害怕狗，可推知是她一看到狗就跑開了，結(jié)合選項(xiàng)可知C選項(xiàng)符合題意，故答案選C。28．You will never achieve success _____you devote yourself to your work.A．a(chǎn)fter B．if C．because D．unless【答案】D【解析】句意：除非你把自己專心于你的工作，否則你將永遠(yuǎn)不會(huì)成功。after在……之后；if如果；because因?yàn)椋籾nless除非；根據(jù)句意可知是unless引導(dǎo)的的條件狀語從句；故選D。29．“A white elephant” means something that is useless, ___________ it may cost a lot of money.A．unless B．until C．since D．a(chǎn)lthough【答案】D【解析】【詳解】句意：“白象”指的是無用的東西，盡管它可能要花很多錢?？疾檫B詞辨析。A. unless除非，引導(dǎo)條件狀語從句；B. until直到……才……，引導(dǎo)時(shí)間狀語從句；C. since由于，引導(dǎo)原因狀語從句；D. although盡管，引導(dǎo)讓步狀語從句。根據(jù)句意，本句是讓步狀語從句，故選D。30．Many people like reading newspapers ______ they can learn what39。s happ