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考點:考查連詞的用法12.________ you’re invited to speak, you should remain silent at the meeting.A.Because B.After C.If D.Unless【答案】D【解析】【詳解】句意:除非你被邀請發(fā)言,否則你應該在會上保持沉默。;……之后;;。根據(jù)句意可知,此句是條件狀語從句,動詞invite與句子的主語you之間在邏輯上存在被動關(guān)系,此空是除非,如果不的意思,此空故填Unless,故選D。13.– I usually choose to take the train to travel __________ I39。m free.So do I. I think we can enjoy something beautiful on the trainA. before B.when C. after D. though【答案】B【解析】【詳解】句意:當我有空的時候,我通常選擇乘火車去旅行。我也是。我認為在火車上我們可以欣賞一些美麗的景色。A. before在…之前;B. when當…時候;C. after在…之后;D. though盡管。根據(jù)題意,故選B。14.Tony has had to cook by himself ________ his mother went on business to Guangzhou.A.since B.a(chǎn)fter C.during D.when【答案】A【解析】【詳解】句意:自從媽媽去廣州出差以來,托尼不得不自己做飯。A. since從……以來;B. after在……之后;C. during 在……期間;D. when當……時候。since后跟時間狀語從句時,表示的是到目前為止的時間段,從句時態(tài)為一般過去時,而主句的時態(tài)為現(xiàn)在完成時,故正確答案為A。15.— Is everyone here today?— No, Lucy is at home ________ she has got a high fever.A.because B.if C.until D.unless【答案】A【解析】【詳解】句意:——今天大家都到齊了嗎?——沒有,露西因為發(fā)高燒呆在家里了。A. because因為;B. if如果;C. until直到……才;D. unless除非,如果不。露西呆在家里沒有來是因為發(fā)高燒的原因。故答案為A。16.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)合選項可知C選項符合題意,故答案選C。17.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。18.Let39。s go climbing Langshan Mountain thi