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问题 填空题

中性粒细胞趋化功能检测包括__________和_______，后者有_________和__________。

答案

参考答案：体内实验法；体外实验法；滤膜小室法；琼脂糖凝胶平板法

填空题

根据所给单词的正确形式，在空白处填入相应的单词。

1. Look! Our English teacher _____ (play) with her students over there.

2. Ben likes talking with people and he wants to be a _____(report) in the future(将来).

3. Lucy usually _____ (brush) her teeth before she goes to bed in the evening.

4. Sunday is the _____ (begin) of a week.

5. Mr. Brown teaches _____ (we) science this year.

6. Paul hopes _____ (see) you on Friday night.

7. Jeremy Shu-How Lin can play basketball very _____(good).

8. Giraffes like eating _____(leaf) for meals.

9. Harry Potter is an _____ (interest) book for children.

10. Helen is busy _____ (write) a letter to her pen friend in the bedroom.

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单项选择题

描述数据集中趋势的特征值有( )。

A．变异系数

B．标准偏差

C．极差

D．算术平均数
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