为了减少高速行驶的车辆产生的噪声对公路两侧单位、居民的干扰，常在高速公路的两侧架设具有一定高度的屏障．这种有效、可行的防止噪声的措施属于（　　）

A．堵塞感受噪声器官

B．阻隔噪声传播的途径

C．控制产生噪声的声源

D．防止噪声产生回声

根据对话情景和内容，从对话后所给的选项中选出能填入每一空白处的最佳选项，并在答题卡上将该选项涂黑。选项中有两个为多余选项。

Dorothy: Debbie！I can’t believe it！I haven’t seen you for ages. 

Debbie: Dorothy！It’s really a nice surprise！ 小题1:

Dorothy: Pretty good. 

Debbie:  小题2:  

Dorothy: I wish I could. But I’m on my way out. I have to be in the city in an hour.

Debbie    小题3:  

Dorothy There’s a lot of traffic and I really have to get going. You know where I live, so why don’t you drop in one evening?

Debbie: I’ll do that.  小题4:   . Let’s keep in touch.  

Dorothy: I’d really like to. I’ll talk to you soon, Debbie. I’m glad I ran into you.

Debbie:    小题5:  

A．It’s been a whole year since we saw each other last time.

B．Where have you been?

C．How are you?

D．Can you join me?E. And you should feel free to call or visit me.

F. Come on. Just for a minute.

G. Me too. Take care.