给出下列命题：

（1）平行于同一直线的两个平面平行  

（2）平行于同一平面的两个平面平行

（3）垂直于同一直线的两直线平行    

（4）垂直于同一平面的两直线平行

其中正确命题的序号为（　　）

His comprehensive surveys have provided the most _________ statements of how, and on what basis, data are collected.

补全对话

从方框中选择最佳选项完成对话，有两项多余

a. They are really loud.

b. On the left is the boy who plays the guitar.

c. I guess they play the blues.

d. Is this the band which is playing at the school dance?

e. When I am in a band, I want to play the guitar.

f. What are they doing?

g. That's great!

Lingling: This is a photo of the Blues Boys playing in a concert last month. They are really great.

Daming:____ 

Lingling: Yes, they play really great music.____ , and the boy in the front is the one who sings.

Tony: And at the back is the boy who plays the drums.____ 

Daming: What kind of music?

Tony: Well, if they are called the Blues Boys,____ and they get everyone dancing.

Daming: ____ 

Tony: You can play the guitar?

Daming: No, I can't. But I'd like to learn!