地平仪是根据什么原理工作的？（） A.陀螺的进动性和摆的稳定性 B.陀螺的地垂性和摆

阅读理解。

                                          The Painting

        A new painting was hanging in the Hemlock Mills Art Gallery. Throughout the day, visitors stood before the new exhibit(展品) and watched to guess what it meant.

        "I think it's a terrifying monster," said a man. "There's no name on it, but I'm sure is was drawn by a famous artist. "

        "I would say that it's a picture of a park as seen from an airplane, "

another man said. "I see many trees and roads. "

        Miss Culture, the local art reporter who worked for "The Hemlock

Weekly News" , said proudly, "This is clearly a masterpiece(杰作) created by an artist who wishes to be not to known to other people. The beautiful lines

of color show a person who is looking back at an exciting lifetime of

success!"

        At that moment, Mr. Lightman, the gallery curator (馆长) , came into the room. "Isn't it great?"he asked with a big smile on his face."My three-year-old son did that this morning. He says it's a maze(迷宫) . I think it's

amazing ! "                                                                   

1. The reason visitors are busy talking about the painting is         .

A. it was painted really beautifully

B. they didn't know what it meant

C. it was painted by a famous artist

D. it was a masterpiece in that time

2. Miss Culture enjoyed the painting a lot _         .

A. because it was from a great artist

B. though it was painted badly

C. because other people didn't understand it

D. but she herself didn't understand it

3. What does"He says it's a maze. I think it's amazing ! "really mean?

A. It's a great painting.

B. It's only a joke.

C. It's just for fun.

D. It's a masterpiece from an artist

不论k为何值时，一次函数（2k-1）x-（k+3）y-（k-11）=0的图象恒过一定点，则这个定点坐标为______．

Disappointingly, the new computer, ________ he loves a lot,   breaks down frequently.

A．which

B．what

C．that

D．one

FTP客户登录时，使用的连接是（），对应的服务器端口为（）。

FTP客户登录时，使用的连接是（）。

A．建立在TCP之上的控制连接

B．建立在TCP之上的数据连接

C．建立在UDP之上的控制连接

D．建立在UDP之上的数据连接

FL（R）N36-12D、型负荷开关的灭弧介质为（）。

A、空气

B、SF6气体

C、“真空”

D、绝缘油