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问题 选择题

Would you like your friend              to Beijing with you?[ ]

A. to go

B. going

C. go

D. goes

答案

答案：A

填空题

用所给词的正确形式填空。

1. It is interesting _________ (know) something about animals.

2. __________ (not open) the door. It is cold outside.

3. She can work out the difficult question _________ (easy)

4. Please keep ___________ (quietly) in the reading - room

5. —Where is my cup?  

   —__________ (you) is over there.

6. What about _________ (go) fishing with us tomorrow?
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单项选择题

声音的三要素为音调、音强和音色，其中音色是由混入基音的 (1) 决定的。
若对声音以22.05 kHz的采样频率、8位采样深度进行采样，则10分钟双声道立体声的存储量为 (2) 字节。

(1)

A．响度

B．泛音

C．高音

D．波形声音
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