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C.WhichD./【答案】 B 【解析】【分析】句意:我們可能會(huì)發(fā)現(xiàn)有趣的是通常需要更多的禮貌。此處是主語從句做主語,從句沒有引導(dǎo)詞,缺少賓語,故答案為B?!军c(diǎn)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。13._______ makes me feel worried is _______ singing stars are centered on by masses of teenagers today. A.What。 whatB.That。 thatC.What。 thatD.That。 what【答案】 C 【解析】【分析】句意:讓我感到擔(dān)憂的是,今天的歌星是以青少年為中心的。分析句子可知,主語從句中的謂語動(dòng)詞makes 缺少主語,主語從句中缺少賓語一般用what,因此選擇 what 來引導(dǎo)主語從句;系動(dòng)詞 is 后面的表語從句句意完整,不缺少成分,因此選擇 that 引導(dǎo)表語從句。分析選項(xiàng)可知C項(xiàng)符合題意,故選C。 【點(diǎn)評】考查名詞性從句,本題涉及 what引導(dǎo)的主語從句和that引導(dǎo)的表語從句的應(yīng)用。 14.It has been pointed out ________ plays a vital role in driving away one39。s anxiety is one39。s sweet childhood memories. A.what thatB.whichC.thatD.that what【答案】 D 【解析】【分析】句意:有人指出,驅(qū)除焦慮所起著至關(guān)重要的作用是童年美好的回憶。本句時(shí)一個(gè)主語從句,it作形式主語,真正的主語為that what plays a vital role in driving away one39。s anxiety is one39。s sweet childhood memories.,主語從句中又有一個(gè)主語從句,且此主語從句中缺少主語,所以用what引導(dǎo)。故選D。 【點(diǎn)評】考查名詞性從句,本題涉及what引導(dǎo)的主語從句。15.______ makes the school proud is ______ more than 90% of the students have been admitted to universities. A.what。 becauseB.that。 becauseC.that。 whatD.what。 that【答案】 D 【解析】【分析】句意:讓學(xué)校驕傲的是,超過90%的學(xué)生被重點(diǎn)大學(xué)所錄取。第一空主語從句中缺少主語,指代事情,故用what。第二空為表語從句,且從句中不缺少成分,故填關(guān)系詞that。故選D。 【點(diǎn)評】考查名詞性從句,本題涉及what引導(dǎo)的主語從句和that引導(dǎo)的表語從句。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(xué)校嗎?根據(jù) Is this school they visited the other day? ,可知主句中缺表語,應(yīng)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(dǎo)的定語從句,that句中做visit的賓語故省略。故選D。 【點(diǎn)評】考查表語從句和定語從句。注意關(guān)系詞that在從句中做賓語時(shí)可省略。17.________ is the centre of our planetary system was a difficult concept to grasp in the Middle Ages. A.It39。s the sun and not the earthB.The sun and not the earthC.Being the sun and not the earthD.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(gè)很難理解的概念。分析句子可知,整個(gè)句子為主系表結(jié)構(gòu),was為系動(dòng)詞,它之前的都為主語,且主語由句子來充當(dāng),句子結(jié)構(gòu)以及句意完整,所以連詞代詞為that。故選D。 【點(diǎn)評】考查名詞性從句,本題涉及that引導(dǎo)的主語從句。18._________ is known to all is that the earth is smaller than the sun. A.As1