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问题 判断题

起升机构是位能负载其中上升为阻力负载，下降为动力负载。

答案

参考答案：对

选择题

Being able to afford ______ drink would be ______ comfort in those tough times.

A．the; the

B．a; a

C．a; /

D．/; a
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补全对话，情景问答
从所给选项中选择恰当的句子补全对话，将编号写在横线上。
Daming(D)   Lingling(L)
D: 1                   
L: Good morning.
D: What do you do in spring?
L: 2                   
D: 3                  
L: It's on the wall.
D: Oh! It's very nice.   4                        
L: Yes, I do.
D: Pass me the kite, please.
L: 5                         

A. Do you like it?
B. Good morning.
C. Where is your kite?
D. I fly kites in the park.
E. Here you are.
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