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【點評】考查名詞性從句,本題涉及that引導(dǎo)的主語從句。Being the sun and not the earthD.30.________ is the centre of our planetary system was a difficult concept to grasp in the Middle Ages. A.D.C.B.29._______ has not been decided next. A. that【答案】 C 【解析】【分析】句意為:應(yīng)該采取什么樣的新措施來控制空氣污染的問題,是讓科學(xué)家非常困惑的事情。B.that。注意關(guān)系詞that在從句中做賓語時可省略。D.B.定語從句,代指地方,用where/介詞+which,根據(jù)the place,可知前面用介詞at,表示在……地方,做地點狀語,介詞提前,因此用at which;根據(jù) the crossriver traffic is the heaviest,可知是對橋所在地點的描述,因此用where,引導(dǎo)表語從句,故選C。 whereat which。 the crossriver traffic is the heaviest. A. the bridge is supposed to be built should betold25.根據(jù)句末or not,要用連詞whether;有句子結(jié)構(gòu)可知,此處是whether引導(dǎo)主語從句,放在句末,用it作形式主語。C.It。 whethert matter【點評】考查主語從句的時態(tài)。D.C.B.23.It is still unknown how AI(人工智能)_______the way of our life as well as the world. A.本題考查表語從句,;……時候;;。故選A。howA.所以選B。你知道他住在哪里嗎?我不知道。B.where does he live 句意:能算出這道難題,你真是太聰明了。 to work【答案】D 【解析】【分析】it可指代下文內(nèi)容做形式主語,其主要有兩種形式:It39。C. working19.It is clever ______ you ______ out the problem. A.分析句子可知,_____Macao has achieved為主語從句,從句中achieve缺少賓語,所以第一個空用what來充當賓語。C.What。 what故選D。C.how 【點評】考查it做形式賓語,熟練掌握固定句式:主+find+it+adj+to do。its分析句子結(jié)構(gòu)可知,連詞and后為一個名詞性從句,因此應(yīng)該使用what引導(dǎo),且what在從句中作主語,故選C。因此選C。D. thatB. that因此選A。What。 that13.________ 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. ______excited Jenny most是主語從句,從句中缺少主語,因此用關(guān)系代詞what ;D.C.B.12.______excited Jenny most was ______ she finally succeeded in ______seemed to be the most difficult exam to him. A.第一空是主語從句,從句中缺主語,要用What;第二空是表語從句,從句不缺成分,所以要填that;第三空是賓語從句,從句中的動詞understand缺賓語,要填what。D.C.B.t understand ________ he said A.故選B。when10.Exactly _________ the potato was introduced into Europe is uncertain, but it was probably around 1565. A.What matters much (=the thing that matters much)。that。C. how what。 because【