试题与答案

(1)滑块落地时速度的大小; (2)弹簧释放的弹性势能。

题型:问答题

题目:

(1)滑块落地时速度的大小;

(2)弹簧释放的弹性势能。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:半月板损伤早期,不会出现关节僵直。

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题型:改错题

Proof reading:(10 处错误,每处1 分,满分10 分)

A new countryside will appearance in China a couple of years away. There will be more new farms with a certain basic knowledge of science or technology, laws and management. By then much farming techniques will have been modernized. With the help of scientists, farmers would use the latest technologies to promote agriculture without harm the environment. As a result, the yearly income of the farmers will get raising and the housing conditions will be improved as well. People will enjoy a clean, tidy and an orderly environment. Besides, the government will provide free compulsory(强制的) educate for rural kids and perfect medical care system farmers.

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