【正文】
t the earthB.19.________ is the centre of our planetary system was a difficult concept to grasp in the Middle Ages. A.因此選A。逗號前有兩個謂語動詞,一個是are,一個是is known,故是兩句話,需填連詞連接這兩句話,根據(jù)句意可知,前面是主語從句,故填that,此處的that,只起連接作用不作任何成分。What。 thatC.That。 what18.________ 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.因此選C。make sth. clear to sb為固定搭配,意為“向某人闡明某事,使某人弄清某事”。分析句子可知,主語從句中的lie為不及物動詞,所以主句中缺少狀語,因此填where。D.C.B.17.________ his failure lies is expected ________ clear to us. A.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。D.C.B.16._______ has not been decided next. A. 【點評】考查名詞性從句,本題涉及when引導(dǎo)的主語從句。根據(jù)時間狀語round 1565得知這里是指時間不確定。D.whyB.whether 【點評】考查名詞性從句和定語從句,本題涉及主語從句和非限制性定語從句的應(yīng)用。第一空處為主語從句,從句缺少主語,需用what引導(dǎo);第二空所在句子是個定語從句,先行詞為整個主句的內(nèi)容,從句中缺少主語,需用which引導(dǎo)。As。It。What。That。14._____ is known to us all is that China has launched Shenzhou VII spaceship, ____ made the country39。故選D。what【答案】 D 【解析】【分析】句意:他們在森林里迷路了,情況更糟糕的是天又黑了。thatwhichit【點評】考查名詞性從句,本題涉及what引導(dǎo)的主語從句的應(yīng)用。根據(jù)is判斷,此處為主語從句,分析該從句,缺少主語,用what。D.ItB.What【點評】考查名詞性從句,本題涉及what引導(dǎo)的主語從句的應(yīng)用。/【答案】 B 【解析】【分析】句意:我們可能會發(fā)現(xiàn)有趣的是通常需要更多的禮貌。WhichWhatThat所以選C。 whoever 有兩個詞義:1no matter who,在這種用法時引導(dǎo)一個讓步狀語從句;2anybody that,在這種用法時,它連接一個名詞性從句,在本題中它連接的是主語從句。D.C.B.10.It is a rule in his family that _______ es home first should cook the dinner.A.句意:他們在森林里迷路了,情況更糟糕的是天又黑了。what【答案】 D 【解析】【分析】本題中含有一個主語從句what made matters worse,其中的what引導(dǎo)起這個主語從句,同時在主語從句中做主語。thatwhichit【點評】考查了名詞性從句,本題涉及what引導(dǎo)的主語從句以及that引導(dǎo)的表語從句。第一空填what,它一方面在句子中引導(dǎo)主語從句,另一方面又在主語從句中作主語;第二空用that引導(dǎo)表語從句且從句中不缺成分,表示對前面情況的說明。It。 whetherC.That 。 that8.____ made me more unhappy was ___ the boy asked my friend to be his girlfriend and she agreed. A. What在從句中充當(dāng)call的賓語。where【答案】 C 【解析】【分析】考查主語從句。C.thats nest”.A.