Question

【题目】If you don't know a word when reading, you needn't always in a dictionary.
A.look it down
B.look it up
C.look up it
D.look for it

Answer 1

【答案】B
【解析】句意：在阅读时如果你不认识单词，你没有必要总是查字典。look up查阅，查找，代词做宾语放中间。结合句意，所以答案是B。