He doesn’t think the question of they are boys or girls is important .A. ifB. whetherC. w

问题补充：

He doesn’t think the question of they are boys or girls is important .

A. if

B. whether

C. which

D. that

答案：

A. if

(答案→)B. whether

C. which

D. that

解析：考查名词性从句。whether … or…是……还是……。句意：他没有思考这个问题，他们是男孩重要还是女孩重要。