某种物质的饱和溶液一瓶，加盖密封，当温度变化时，溶液 [ ]

搜题请搜索小程序“爱下问搜题”

问题选择题

A．变成不饱和溶液或析出晶体后仍是饱和溶液

B．变成不饱和溶液

C．析出晶体后变成不饱和溶液

D．仍为饱和溶液

答案

答案：A

句型转换

按要求变换句型(一空一词,含缩写)。

1. What's the matter with Tom? (给出同义句)

What's _____ _____ Tom?

2. She has a bad cold. (就划线部分提问)

What's_____ _____ her?

3. You should see the dentist. (就划线部分提问)

What _____ I _____ ?

4. He should eat some vegetables and fruit. (变为否定句)

He _____ eat any vegetables _____ fruit.

5. John didn't come to school yesterday because he was ill. (就划线部分提问)

_____ _____ John come to school yesterday?

单项选择题

类风湿关节炎最早的关节症状是( )

A．晨僵
B．关节痛
C．肿胀
D．畸形
E．功能障碍