空气过滤除菌的原理是（）。 A.随流阻挡 B.重力沉降 C.静电吸附 D.扩散粘留

补全对话 从方框中所给的选项中选择正确的句子补全以下对话（10分）
A:Hello! May I speak to Sally?
B:  小题1:  May I take a message?
A:Yes. This is her friend Maria calling. Would you please ask Sally to bring a VCD of popular songs to the evening party tonight?
B:  小题2:  Wait a moment. I’ll get a pen to write this down.“Maria called. You should bring a VCD of popular songs to the evening party tonight. Is it right?”
A:Yes.  小题3: You may also tell her to call me back if she has a chance.
B:All right.  小题4: 
A:My number is 2385729. Now I’ll say it again 2-3-8-5-7-2-9.
B:OK, I think she will see the message when she comes back.
A:  小题5:  Goodbye.
B:Bye-bye.

A:Thank you. B:That’s right. C:What’s your telephone number? D:Sure. E:I’m afraid she is not in.