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why【答案】 D 【解析】【分析】句意:這名男子沒有早點報告這次事故的原因根本沒有搞清楚。故選D。21.We believe ________ you have been devoted to ________ naturally of great necessity. A. beingB. beC. areD. is【答案】 D 【解析】【分析】句意:我們相信你所投入的當然是非常必要的。 【點評】考查名詞性從句和主謂一致,本題涉及what引導(dǎo)的主語從句和一般現(xiàn)在時。wonderA.willcelebratethatWaterisfun.C.doeattheFestivalwhetherwillresolutionNewsA. how will you celebrate Thanksgiving你要怎樣慶祝感恩節(jié);B. that the Water Festival is really fun. 潑水節(jié)真的有趣;C. what do people eat on the MidAutumn Festival中秋節(jié)人們叫什么?D. whether you will make resolution on New Year39。Wonder后跟的是賓語從句,賓語從句要用陳述語序。Wonder:對……感到疑惑,想知道,后常跟一個含有“疑問”意義的賓語從句,B錯。23.Franklin told them all to be in Britain again.A.B.how was he happyhow he happy was【答案】 B 【解析】【分析】句意:富蘭克林告訴他們所有人他再一次來到英國是多么的開心。故選B。s up?—I39。that can I pass the exam or notB.Whether I can pass the exam or not【答案】C 【解析】【分析】句意:嗨,你看起來很擔心,怎么了?我不確定我是否能通過這場考試。故選C。25.You have spent too much time playing puter 39。whyB.whatD.那就是為什么你眼睛疼?!军c評】考查表語從句。26.Pay no attention to those who laugh at you. What matters most is ________ you see yourself. A.B.C.D.本題考查表語從句,;……時候;;。故選C。27.It is still unknown how AI(人工智能)_______the way of our life as well as the world. A.B.C.D.It是形式主語,真正的主語是后面how引導(dǎo)的從句,為主語從句?!军c評】考查主語從句的時態(tài)。28.That is _____we were late last time. A.whenC.what【答案】 C 【解析】【分析】句意:這就是上次我們?yōu)槭裁催t到的原因。為什么遲到,用why,引導(dǎo)名詞性從句,做表語,故選C。29.t matteryou e or not. A. whetherIt。C. ifIt。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。 【點評】考查連詞和代詞辨析。30._______ caused the accident has not been found out yet. A.WhichC.That【答案】 A 【解析】【分析】句意:造成事故的原因還沒有查明。 【點評】考查主語從句。