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until直到;D. whenever無論何時。根據(jù)上文the tourists didn39。t leave the hotel可知下文是直到雨停,not…until…表示直到……才。根據(jù)題意,故選C。41.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:如果我們每一個人都過更綠色的生活,那么我們的世界將會變的越來越好。A. before在……之前,引導時間狀語從句;B. if 如果,引導條件狀語從句;C. though 盡管,雖然,引導讓步狀語從句;D. until直到……引導時間狀語從句。結(jié)合句意,故選B??键c:考查連詞的用法。42.________ jeans were invented over 100 years ago, they39。re still in fashion today.A.Because B.If C.Although D.Since【答案】C【解析】【詳解】句意:盡管牛仔褲在100多年前就被發(fā)明了,現(xiàn)在他們?nèi)匀缓芰餍???疾檫B詞辨析。A. Because 因為; B. If 如果; C. Although 盡管; D. Since自從。結(jié)合句意,牛仔褲被發(fā)明了100多年,現(xiàn)在仍然流行??芍昂蟊硎咀尣疥P系,故用連詞although,故選C。考點:考查連詞的用法。43.Chen Wei isn’t at school today ________ he is taking a robot petition in Shanghai.A.so B.because C.before D.if【答案】B【解析】試題分析:句意:陳煒今天不在學校因為他在上海參加機器人競賽。so所以;because因為;before在……之前;if如果。所以選B??键c:考查連詞。44.Little Jack has learned to do lots of things on his own , ______ he is only four years old.A.if B.though C.for D.since【答案】B【解析】句意:小杰克自己學會了做許多事情,盡管他只有四歲。A. if 如果; B. though 盡管 C. for 因為,為了; D. since自從;根據(jù)Little Jack has learned to do lots of things on his own , 和he is only four years ,所以用 though 引導讓步狀語從句;故選B45.The teacher speaks very loudly all the students can hear her.A.so that B.because C.since D.when【答案】A【解析】【詳解】句意:為了讓所有學生都能聽見她,老師講得非常大聲。A. so that 是固定詞組,引導目的狀語從句時,表示“以便;為了”,從句中常使用can /could /may /might /will /would /should等情態(tài)動詞或助動詞,因此選A。B. because 意為“因為”;C. since 表示“自……以來,因為,由于”;D. when 意為“當……時”。老師大聲說話的目的是讓學生們都聽到,所以,B、C、D均不符合題意。46.– You bought the car about ten years ago? Yes. it’s old, it still runs well.A.Because B.Since C.Although D.But【答案】C【解析】【詳解】句意:——你十年前買的車?——是的。雖然它很舊,但它仍然運行良好??疾檫B詞辨析。A. Because因為,引導條件狀語從句,前后句是因果關系;B. Since自從……以來,引導時間狀語從句;C. Although雖然,盡管,引導讓步狀語從句,前后句是轉(zhuǎn)折關系,although后面句子表示讓步條件;D. But但是,并列連詞,連接并列句,前后句轉(zhuǎn)折關系。根據(jù)句意可知前后句是轉(zhuǎn)折關系,前句表示讓步條件;故選C。47.Let39。s go climbing Langshan Mountain this Saturday __________ the weather is fine.Good idea!A.though B.if C.unless【答案】B【解析】【詳解】句意“如果天氣好,周六我們?nèi)ヅ缻~山吧。好主意”。(引導讓步狀語從句);(引導條件狀語從句);(引導條件狀語從句)。根據(jù)句意可知,譯為“如果天氣好”,表示條件,故選B。48.Daming hasn39。t done much exercise _______ he got his puter.A.when B.if C.though D.since【答案】D【解析】試題分析:句意:自從有了電腦,大衛(wèi)就沒有做許多運動了。A. when當……時;指時間;B. if如果,表示條件;C. though雖然,盡管,表示讓步;D. since自從,表示時間的起點。不鍛煉是從有電腦開始的,表示時間的起點,用since。故選D??键c:考查連詞辨析。49.—I don 39。 t know if Sam tomorrow.—Don39。t worry. I will tell you as soon as he .A.will e。 es B.es。 will eC.will e。 will e D.es。 es【答案】A【解析】【詳解】句意:——我不知道薩姆明天是否會來?!獎e擔心,他一來我就告訴你。第一個句子為if引導的賓語從句,根據(jù)從句中的時間狀語tomorrow判斷,從句的時態(tài)為一般將來時,排除B,D;第二個句子是as soon as引導的時間狀語從句,遵循“主將從現(xiàn)”的原則,本句的主句是一般將來時,as soon as引導的從句要用一般現(xiàn)在時,故答案為A。50.Pandas are facing danger!The situation won’t change humans stop killing.A.unless B.though C.if D.a(chǎn)fter【答案】A【解析】試題分析:句意:熊貓面臨危險。如果人們不停止殺害熊貓,形勢不會改變。此題考查連詞,A如果不;B盡管;C如果;D在之后。根據(jù)句意,應選A。考點:考查連詞。