最准确定量评定肌肉力量大小的收缩形式为A．等张收缩 B．等长收

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问题单项选择题

最准确定量评定肌肉力量大小的收缩形式为

A．等张收缩

B．等长收缩

C．等速收缩

D．静力收缩

E．以上都不对

答案

参考答案：C

解析：等速收缩是最准确定量评定肌肉力量大小的收缩形式。

填空题

用所给词的适当形式填空。

1. Jim _____ (wear) a yellow coat yesterday.

2. There _____(be) a man in the room last night.

3. They _____ (have) a meeting yesterday morning.

4. Amy _____(not buy) the book last week.

5. The people _____(take) the boy to the hospital last night.

6. The children _____(be) here last month.

7. My brother wants _____(play) football with us.

8. He often _____(do) his housework on Sundays.

9. Look! Many young people _____(swim) in the pool.

10. _____you _____(come) here this morning?

名词解释

常量矿物元素1