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句 ,C. although盡管,引導(dǎo)讓步狀語從句,D. because因?yàn)椋龑?dǎo)原因狀語從句,結(jié)合句意,可知前后句意是讓步關(guān)系,故選C。20.—Have you heard of the latest news about WIFI?—Yes. When the 5G age , the Internet speed will be 100 times as high as 4G.A.e B.es C.will e D.is ing【答案】B【解析】【詳解】句意:——你聽說過無線網(wǎng)絡(luò)的最新消息嗎?——是的。到了5G時(shí)代,網(wǎng)速將是4G的100倍。A. e動(dòng)詞原形; B. es第三人稱單數(shù)形式; C. will e一般將來時(shí)態(tài); D. is ing現(xiàn)在進(jìn)行時(shí)態(tài),此句是when引導(dǎo)的時(shí)間狀語從句,遵循主將從現(xiàn)的原則,此空應(yīng)填謂語動(dòng)詞的第三人稱單數(shù)形式,此空故填es。21.Have you improved your spoken English?Not yet.I39。ll try my best______I am not good at it now.A.so B.a(chǎn)lthough C.but D.until【答案】B【解析】【詳解】句意:——你提高你的英語口語了嗎?——還沒有.雖然我現(xiàn)在還不擅長,但是我會(huì)盡力的.考查連詞辨析。A. so所以;B. although 雖然;C. but但是;D. until直到。根據(jù)語境推測(cè)句意是——你提高你的英語口語了嗎?——還沒有.雖然我現(xiàn)在還不擅長,但是我會(huì)盡力的.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)讓步狀語從句,故選B.【點(diǎn)睛】本題主要考查連詞的用法,連詞在句子中主要起聯(lián)系上下文的作用,他們之間的區(qū)別就是表示邏輯關(guān)系的不同,所以在解題時(shí)先要理解上下文含義,然后根據(jù)上下文邏輯關(guān)系選擇合適的連詞.前后句之間是讓步關(guān)系.22.________ there is danger on the internet, online insurance is still popular among the young.A.Unless B.Though C.Since D.Until【答案】B【解析】【詳解】句意:雖然網(wǎng)上存在危險(xiǎn),但網(wǎng)上保險(xiǎn)在年輕人中仍然很流行??疾檫B詞辨析。A. Unless除非,如果不,引導(dǎo)條件狀語從句;B. Though盡管,雖然,引導(dǎo)讓步狀語從句;C. Since自….以來,既然,由于,引導(dǎo)時(shí)間狀語從句和原因狀語從句;D. Until:到…為止,在…以前,直到,引導(dǎo)時(shí)間狀語從句。根據(jù)句意可知前后句句意是轉(zhuǎn)折關(guān)系,前句是讓步關(guān)系,可知填Though;選B。23.Many people do not realize the importance of health ______ they have fallen ill.A.until B.while C.when D.a(chǎn)fter【答案】A【解析】試題分析:句意:一些人直到失去了健康才意識(shí)到它的重要性。本題考查的是not…until 句型,“直到……才”。For為了;but 但是;as 作為。故選A??键c(diǎn):考查連詞的用法。24.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??键c(diǎn):考查連詞。25.Get prepared _______ you can set out immediately if something happens.A.a(chǎn)fter B.since C.while D.so that【答案】D【解析】【詳解】句意:準(zhǔn)備好以便如果有事發(fā)生你可以立即出發(fā)。考查連詞。After在……之后;since自從,既然;while當(dāng)……的時(shí)候; so that以便。從句子之間的關(guān)系來說,表示目的,所以要用“目的狀語從句”,故本題選D。26.Helen was very rude to me. I refuse to speak to her again __________ she says sorry.A.until B.if C.because D.since【答案】A【解析】【詳解】句意:海倫對(duì)我粗魯,我拒絕跟她再次說話,直到她向我道歉為止??疾檫B詞辨析。until 直到……才;if 如果;because 因?yàn)?;since 自從,既然。結(jié)合句意可知,此句是until引導(dǎo)的時(shí)間狀語從句,故答案選A。27.___________ I do, I do it for you. Do not ever doubt that, my boy.A.Whatever B.Wherever C.Whenever D.Whoever【答案】A【解析】【詳解】句意:不管我做什么,我都是為你做的。別懷疑,孩子。Whatever無論什么;B. Wherever無論在哪里;C. Whenever無論何時(shí);D. Whoever無論誰。分析句子___________ I do, I do it for you. 的結(jié)構(gòu)可知,本題缺少的是賓語,也就是do的賓語,能充當(dāng)賓語的是選項(xiàng)A/D,故排除B/C;Whoever無論誰,指人,做do的賓語不合適,排除。whatever 是連詞,引導(dǎo)讓步狀語從句。從句意上說是在從句中做do的賓語。語境是:不管我做什么,我都是為你做的。故選A。28.—Tom, you look tired this morning. What’s wrong?—I was so busy that I didn’t go to bed _____ 12 o’clock last night.A.until B.when C.though D.unless【答案】A【解析】本題符合notuntil的結(jié)構(gòu),表示直到才,故選答案為A29.The actor was happy he got a part in the a movie,_____the part was a small one.A.since B.while C.though D.unless【答案】C【解析】【詳解】句意:這個(gè)演員很高興他在這部電影中有一個(gè)角色