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中,故排除C;who指人,根據(jù)表語指的事情,不是人,故排除A;what在主語從句中可以作主語或賓語,指事,符合句意,故選D。5.________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties. A. whoseIt。C. whomIt。第一空it is known to us all that…是個固定句型,意為“眾所周知…”;第二空為介詞+關(guān)系代詞引導(dǎo)的定語從句,先行詞the old scientist指人,作介詞for的賓語,只能用whom,故選D。6.Has it been announced ______? A.that are the planes to take offC.D.【點評】考查名詞性從句,it作形式主語,關(guān)系副詞when引導(dǎo)的從句作真正的主語。what。B. thatit。D. because【答案】 A 【解析】【分析】考查名詞性從句的連接詞。8.They lost their way in the forest, and ___ made matters worse was that night began to fall.A.B.C.D.AC兩項不能引導(dǎo)主語從句,which在引導(dǎo)名詞性從句的時候總是含有疑問的語義,而本句中并沒有疑問的語義。故D正確。That, whatWhat, thatThat, thatWhat, what【答案】 B 【解析】【分析】句意:使NBA世界驚訝的是Kobe Bryant在一場比賽中得了81分?!军c評】考查名詞性從句,本題涉及關(guān)系代詞what引導(dǎo)的主語從句和表語從句的應(yīng)用。WhichWhatItAs【答案】 C 【解析】【分析】句意:醫(yī)療保健的進(jìn)步將促進(jìn)一個更強(qiáng)大、更繁榮的經(jīng)濟(jì),這是我們的信念。故答案選C。11.Exactly _________ the potato was introduced into Europe is uncertain, but it was probably around 1565. A.whenC.how【答案】 B 【解析】【分析】句意:土豆被引進(jìn)歐洲具體的事件不被確定,但是可能是在1565年左右。故選B。 That。B. thatWhat。D. what【答案】 A 【解析】【分析】句意:眾說周知,禮貌在每一個國家中都是非常重要的,但是麻煩是,不同的國家對于什么是良好的禮貌有著不同的認(rèn)識。about是介詞,其后是個句子故應(yīng)填連詞把這兩句話連接起來,所缺詞作are的表語,故填what。 【點評】考查名詞性從句,本題涉及that引導(dǎo)的主語從句和what引導(dǎo)的賓語從句。It39。The sun and not the earthC.That the sun and not the earth【答案】 D 【解析】【分析】句意:太陽而不是地球是我們行星系統(tǒng)的中心,這在中世紀(jì)是一個很難理解的概念。故選D。14.It was disappointed me. A. whatwhat。C. whichwhich。這是一個強(qiáng)調(diào)句型,it is/was that...是固定搭配,what he said是被強(qiáng)調(diào)部分, 你可以發(fā)現(xiàn)去掉it was that后, 句子仍然完整。 【點評】考查主語從句的強(qiáng)調(diào)形式。AsWhatItWhich【答案】 B 【解析】【分析】句意:眾所周知地球比太陽小。 is known to all 是主語從句,從句中缺少主語,因此用what,選B。16._______ has not been decided next. A.B.C.D.根據(jù)助動詞has可知前面是主語,what to do為名詞性從句,可做主語,故選B。17.______ has caused great confusion is ______ he made it without anyone else39。What。What。It。It。表示“讓人困惑的事情”用what引導(dǎo)主語從句,表示“如何做到的”用how表方式,引導(dǎo)表語從句。18.We bel