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【答案】 C 【解析】【分析】句意:他們在森林里迷路了,更糟糕的是天開始黑了。根據(jù)連詞and可知,本句需要一個引導主語從句的連接詞,該詞同時還要能在從句里充當主語。that不能在句中作成分;it不能引導主語從句;which意為“哪一個”,不符合本句語境。排除A、B、D三項。故選C?!军c評】考查名詞性從句,本題涉及what引導的主語從句的應用。13.________ has been proved is that animals and insects have their own languages. A.WhatB.AsC.ItD.That【答案】 A 【解析】【分析】句意:已被證明的是動物和昆蟲有自己的語言。根據(jù)is判斷,此處為主語從句,分析該從句,缺少主語,用what。選A?!军c評】考查名詞性從句,本題涉及what引導的主語從句的應用。14.It was he said disappointed me. A.that。 whatB.what。 thatC.that。 whichD.which。 that【答案】 B 【解析】【分析】句意:正是他說的話讓我很失望。這是一個強調(diào)句型,it is/was that...是固定搭配,what he said是被強調(diào)部分, 你可以發(fā)現(xiàn)去掉it was that后, 句子仍然完整。 what he said做主語,主語從句中said缺賓語用what補足,故選B。 【點評】考查主語從句的強調(diào)形式。15.Exactly _________ the potato was introduced into Europe is uncertain, but it was probably around 1565. A.whetherB.whenC.whyD.how【答案】 B 【解析】【分析】句意:土豆被引進歐洲具體的事件不被確定,但是可能是在1565年左右。根據(jù)時間狀語round 1565得知這里是指時間不確定。故選B。 【點評】考查名詞性從句,本題涉及when引導的主語從句。 16.Is this school they visited the other day? A.thatB.whichC.whereD.the one【答案】 D 【解析】【分析】句意:這就是幾天前他們參觀的那間學校嗎?根據(jù) Is this school they visited the other day? ,可知主句中缺表語,應用the one指代this school;再根據(jù) they visited the other day? ,可知在the one后邊緊跟的是that引導的定語從句,that句中做visit的賓語故省略。故選D。 【點評】考查表語從句和定語從句。注意關系詞that在從句中做賓語時可省略。17.______excited Jenny most was ______ she finally succeeded in ______seemed to be the most difficult exam to him. A.That。 that。 whichB.What。 that。 whatC.That。 because。 thatD.What。 because。 which【答案】 B 【解析】【分析】句意:珍妮最興奮的是對他來說似乎是最困難的考試,她終于成功了。 ______excited Jenny most是主語從句,從句中缺少主語,因此用關系代詞what ; _____ she finally succeeded in ...是表語從句,從句中不缺少成分,因此用引導詞that; ______seemed to be the most difficult exam to him. 是賓語從句,從句中缺少主語,因此用關系代詞what , 故選B。 【點評】考查名詞性從句,本題涉及主語從句,表語從句和賓語從句。18.________ manners are very important in every country is known to all,but the trouble is that different countries have different ideas about ________ good manners are. A.That。 whatB.That。 that16