Question

【题目】It’s difficult to these old books, for some of them belong to none of the classification.

A. look out B. sort out

C. put out D. give out

Answer 1

【答案】B

【解析】动词短语用法辨析。A. look out注意，当心；B. sort out整理；C. put out 熄灭，出版；D. give out 分发，发出。belong to属于（没有被动语态，没有进行时）；句意：把这些旧书分类很困难，因为他们不属于任何一种类别。故B正确。