课时跟踪检测 选修七 Unit 3 Under the sea
(计时：45分钟)
Ⅰ.词汇知识
1．(2014·东阳中学月考)The flight usually arrives at 2 o'clock ________， but today it will arrive at twenty past two. It'll be 20 minutes late.
A. quarter B. sharp
C. narrowly D. steeply
答案与解析 B sharp在句中是副词，意思是“准时地”。
2．— Do you work in this office?
— No, as a clerk in the office is on vacation, I'm just ________ here for about a week.
A. hanging out B. working out
C. turning out D. helping out
答案与解析 D 句意：——你在这个办公室工作吗？——不，这儿的一个职员休假了，我在这儿做大约一周的帮手。hang out“闲荡；晾晒(衣服)”； work out“算出；解决；制订出”； turn out“结果(是)”； help out“协助；援助”。
3．We are now enjoying the cool air in the room. ________， the farmers are harvesting crops in the hot sun.
