正比例函数y=kx（k是常数，k≠0）的图象是一条经过（ ）的直线。当k>0时，

补全对话。

      (A girl wants to buy a camera. Now she is in a shop.)

MAN: Good morning. 1_____?

GIRL: Yes, please. I'd like to buy a camera.

MAN: We have many cameras here. Some are made in. China, and some are made in other countries.

GIRL: This one looks very nice. 2_____?

MAN: In Japan.

GIRL: 3_____?

MAN: 5000 yuan. This is a digital camera.

GIRL: Wow, that's too expensive! 4_____. Do you have an ordinary one?

MAN: Sure. What about those ones?

GIRL: Well, this one looks very good. And the price is OK. Is it made in China?

MAN: Yes, it's made in Shanghai.

GIRL: OK, 5_____.

任何化油器油平面都是可以调整的。

下列说法中正确的是(　　)

A．经典力学适用于任何情况下的任何物体

B．狭义相对论否定了经典力学

C．狭义相对论研究的是物体在高速运动时所遵循的规律

D．狭义相对论研究的是物体在低速运动时所遵循的规律

重点税源管理中收集、掌握的重点税源资料（）。

A、规范

B、系统

C、连续

D、可比

活性染料染棉纤维，浸染工艺一般有（）、（）和（）三种。