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问题 填空题

物体_____________________的力叫做重力。物体所受重力的施力物体是___________。方向总是____________。

答案

由于地球的吸引受到； 地球； 竖直向下

单项选择题

关于子宫内膜的周期性变化，错误的是

A．子宫内膜有基底层和功能层

B．基底层是孕卵种植部分

C．功能层受卵巢激素影响而呈周期性变化

D．孕激素使增生期子宫内膜转化为分泌期子宫内膜

E．功能层剥脱伴子宫出血，形成月经
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句型转换

同义句转换。

1. Her mother does not agree with her friendship with John.

    Her mother does not ____ ____ her friendship with John.

2. The concert which was given by their friends was a great success.

    The concert ____ ____ ____ ____ was a great success.

3. At airport security inspection is given in order that the security on

    board may be guaranteed to a certain degree.

    At airport security inspection is given ____ ____ the security on

    board may be guaranteed to a certain degree.

4. I would advise you to attend your manners.

    I would suggest ____ ____ your manners.

5. He will be considered to be a weak leader.

    He will be considered ____ ____ ____.

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