Question

【题目】 (2015·江苏)The number of smokers, _____ is reported, has dropped by 17 percent in just one year.

A. it B. which C. what D. as

Answer 1

【答案】D

【解析】句意：据报道，吸烟者人数仅（过去）一年就减少了17%。分析句子结构可知，_____ is reported是非限制性定语从句，关系词所表示的意义为＂正如＂。故用as。which引导的非限制性定语从句无此意义。