高考英语介词和介词短语练习119
题目内容

Many medical scientists are racing__________time to find a cure for H1N1 as soon as possible.

2021-07-26

A.on

B.against

C.for

D.In

题目答案

试卷相关题目

最新试卷
热门试卷

长理培训客户端 资讯,试题,视频一手掌握

去 App Store 免费下载 iOS 客户端