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cao 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(dāng)賓語。C.What。 what連接詞引導(dǎo)一個主語從句,并在主語從句中做句子的主語,故選D。B.Which is【答案】 D 【解析】【分析】句意:我們相信你所投入的當(dāng)然是非常必要的。C. be21.We believe ________ you have been devoted to ________ naturally of great necessity. A. Which【答案】 B 【解析】【分析】句意:眾所周知地球比太陽小。WhatD.B. 【點評】考查名詞性從句,本題涉及主語從句和同位語從句。D. whichB. that故選D。what。that。注意that引導(dǎo)同住語從句時,在句中不做成分,也沒有詞義。that。 whatpuzzles scientists a lot. A. 【點評】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。That。 that15._______ makes me feel worried is _______ singing stars are centered on by masses of teenagers today. A. that【答案】 B 【解析】【分析】句意:正是他說的話讓我很失望。B.that。主語從句屬于名詞性從句的一種,填哪個連接詞要分析從句缺少什么成分,然后確定所選的詞。A. why為什么;B. that引導(dǎo)名詞性從句只起引導(dǎo)詞作用,不充當(dāng)成分;C. which哪一個;D. What什么。選A。As12.________ has been proved is that animals and insects have their own languages. A.D.B.you don39。ThatB.t like him is none of my business.A.What引導(dǎo)主語從句______ I call my “home”且whatB.9.Located between the 16th and the 18th floor, ______ I call my “home” is more like a “bird39。What was it that。Was it what。 【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。that are the planes to take offC.7.Has it been announced ______? A.D.C.B.6._______ are playing an important part is well known to us all.A.題干句子中that到句子結(jié)束是賓語從句,且從句動詞用“will+動詞原形”表示將來,由此推斷出空白處謂語動詞應(yīng)用現(xiàn)在的某種時態(tài),在所給四個選項中,只有B項正確。had been announced選C。D. that。B. that。4. why【答案】 C 【解析】【分析】句意:最讓我吃驚的是那個女孩通過了駕駛考試。C. how3.___ surprised me most was ____the girl passed the driver test. A.s anxiety is one39。whichs sweet childhood memories. A. ...是表語從句,從句中不缺少成分,因此用引導(dǎo)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(guān)系代詞what , 故選B。 because。 because。 that。 that。That。What。That。What。 _____ she finally succeeded ins anxiety is one39。B.that本句時一個主語從句,it作形式主語,