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问题 选择题

—_____ does the baby mouse weigh?    

—About 20 grams. [ ]

A. How            

B. What          

C. How many      

D. How much

答案

答案：B

填空题

单词考查。

1. N______ of them is a teacher, they are both students.

2. Have you h______ of the exciting news? Yes, I have.

3. There are many children playing here, It is too n          .

4. Don't all speak at the s           time, Please say it one by one.

5. I don't like maths, John doesn't like, e______.

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单项选择题

酵母细胞总数的测定，常采用（）

A.含氮量测定

B.血球计数器

C.比浊法

D.干重法
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