______ is known to us is that tobacco contains nicotine and other harmful products, so you should give up smoking.
A．AsB．ItC．WhatD．Which
C

試題分析：考查主語從句：句意：我們都知道的是香煙含有尼古丁和其他有害的物質(zhì)，所以你應(yīng)該戒煙。第二個is是謂語，前面的是主語從句，主語從句缺少主語，用what連接主語從句，選C。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：單選題

______ is surprising to us is that Tom, for _______ English was once boring, can speak English fluently as though he were a native speaker.
A．As; whomB．What; whose
C．It; whose D．What; whom

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

(2012·天津)It doesn't matter ________ you turn right or left at the crossing—both roads lead to the park.
A．whetherB．howC．ifD．when

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The limits of a person’s intelligence, generally speaking ,are fixed at birth, but       he reaches these limits will depend on his environment.
A．whereB．whetherC．thatD．why

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

____ the PX project will be called off depends, for it still needs more research and discussion. 
A．That B．WhetherC．WhereD．What

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

________ Barbara Jones offers to her fans is honesty and happiness.
A．WhichB．WhatC．ThatD．Whom

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

____ is known to us all is that the 2008 Olympic Games will take place in Beijing.
A．What B． ItC．AsD．Which

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

_______ is surprising is that there are so many Chinese restaurants in Toronto. 
A．ItB．ThatC．SuchD．What

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

______ leaves the room last ought to make sure that the windows are closed and the door locked.
A．WhoeverB．Who C．Who willD．Those who

查看答案和解析>>

同步練習(xí)冊答案