题目内容

双作用叶片泵只能做成()泵

A. 定量
B. 变量

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A. On foot.
B. 2 hours.
C. It's warm.
D. 5 days a week.

[音频]

A. There are two bus stops.
B. You can get there by bus.
C. You can take Bus No. 6.
D. It is very far from here.

[音频]

A. I'm sorry to disturb you.
B. I want to go to Beijing Park.
C. I want to see you in the park.
D. That's very kind of you.

[音频]

A. Where do you want to go?
B. What do you want?
C. Why are you lost?
D. That's problem.

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