We don’t doubt _____ he will succeed in the research work.
A．that B．whether
C．how D．what
答案
A
【解析】
考查名词性从句。句意：我们不怀疑他会在研究工作中取得成功。动词doubt在否定句或疑问句中通常接that引导的从句。故选A。
【点睛】
动词doubt后接宾语从句，在否定句和疑问句中，doubt后面接that引导的宾语从句；在肯定句中，doubt后面一般接whether或if引导的宾语从句。
There is some evidence _____ a small amount of alcohol is good for you.
A. which B. what C. whether D. that
News came from Europe _____ Amy and Laurie, the grandson of a wealthy family, had planned to be married soon.
A. where B. which C. as D. that
In recent years travel companies have succeeded in selling us the idea _____ the further we go, the better our holiday will be.
A. of which B. where C. which D. that
At present, when purchasing a house, we have to take the fact into account _____ we are still faced with the global financial crisis.
A. whether B. what C. that D. which
Yesterday evening the board had a discussion regarding ______ they should set up more scholarships to meet the increasing demands.
A. what B. whether C. that D. who
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