题目内容

自由潜水的湿衣（多选）：

A. 从来没有头套
B. 通常用高质量的氯丁橡胶制作以提高保暖和灵活性
C. 量身定做
D. 有拉链，穿衣方便

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下面关于呼吸管的使用正确的选项有：（多选）B C D A B A B A B C D

A. 在水面上使用呼吸管呼吸并关注你的潜伴。
B. 下潜时永远把呼吸管摘掉A
C. 下潜时移除呼吸管是为了减小水阻且在你 BO 是能够保护你气道不进水
D. 以上都不对

Directions: please read the following sentences and then choose the best answer from the four choices marked A, B, C, and D. (每题20分，共100分)The author ____________ in your review has written a letter in reply.

A. you criticizing
B. you criticized
C. you are criticized
D. has criticized

At the end of the month the post office will send him an enormous bill ____________he won’t be able to pay.

A. with
B. where
C. for
D. /

The couple were stunned when their request _____________ a child was rejected.

A. to adopt
B. had adopted
C. was adopting
D. had been adopted