Question

You’d better look up the new word in a dictionary____ you don’t know it.

A．if

B．as

C．though

D．whether

Answer 1

A

试题分析：句意：如果你不知道这个新单词，最好去查字典。A 如果；B 正如；C 尽管；D 是否；结合题意故选A。