题目内容
【题目】 (2012·福建) The air quality in the city, __________ is shown in the report, has improved over the past two months.
A. that
B. it
C. as
D. what
【答案】C
【解析】本题考查定语从句的引导词as用法。as引导非限制性定语从句,意为“正如”。句意:正如报告所展示的,这座城市的空气质量在过去的两个月已经有所改善。
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