题目内容：

Can you tell me what,___,is the difference between notebook computer and laptop computer?
A.if necessary B.if possible C.if anything D.if only
选哪个?为什么?

优质解答

权威答案,C,if anything 是插入语,意思是"如果有的话",这句话的意思是:
你能告诉笔记本电脑与膝上型计算机有区别话,你能告诉我吗?