This is certainly the case, but ____ it is a mistake or not I don’t know.
A．ifB．even thoughC．whetherD．that
C                       
引導(dǎo)賓語(yǔ)從句時(shí),whether 和if常可互換,但如從句提前,則只能用whether。  
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來源：不詳 題型：單選題

I try to understand __________ that prevents so many Chinese from being as happy as one might expect.
A．why is itB．what is itC．why it isD． what it is

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

In his speech, Premier Wen Jiabao points out that creativity is ______it takes to keep a nation highly competitive .  
A．howB．what C．which D．that

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

The first thing ____ you should do is to learn all the new words by heart.
A．whatB．thatC．whichD．who

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

The teacher found ____ difficult to decide ____ he would take with him to attend the conference.
A．it; whomB．himself; whoC．this; whomD．that; who

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

____ puzzled the mother most was ____the son would never agree with her.
A．What; whyB．That; howC．Which; whenD．What; where

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

______ about wild plants that they decided to make a trip to Madagascar for further research
A．So curious the couple wasB．So curious were the couple
C．How curious the couple wereD．The couple was such curious

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

Children’s brains can’t develop properly_______ they lack protein(蛋白質(zhì)).
A．whenB．sinceC．becauseD．unless

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

It is ________ that almost all the students like it.
A．such good a bookB．so a good book
C．so good a bookD．such good book

查看答案和解析>>

同步練習(xí)冊(cè)答案