正常脑脊液中的葡萄糖浓度约为血糖的( )A．20%～30%(约为25%)B．30%

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问题单项选择题

正常脑脊液中的葡萄糖浓度约为血糖的( )

A．20%～30%(约为25%)
B．30%～40%(约为35%)
C．30%～90%(约为60%)
D．10%～80%(约为45%)
E．80%～100%(约为90%)

答案

参考答案：C

阅读理解

阅读理解。

This is a girl. Her name is Cathrine. She has a cat. It's an English cat. Her friends are Amy and Barbara.

They have cats, too. They are Chinese cats. The English cat is four years old. The Chinese cats are both (都)

two. They all(都) like their cats.

Now they can't see their cats. They think their cats are in the tree(在树上). They go there and carry (抱)

them down.

1. Cathrine has a good _____ cat.

A. English

B. Chinese

C. American

2. Cathrine has _____ friends.

A. one

B. two

C. three

3. The English cat is _____ and the Chinese cats are _____.

A. two, two

B. two, four

C. four, two

4. _____ are in the tree.

A. The cats

B. Cathrine

C. The English cat

5. — Do they like their cats?

— ______.

A. No, they don't.

B. Yes, they do.

C. Yes, they don't.

单项选择题

是以一种完全通用的方法来设计函数或类而不必预先说明将被使用的每个对象的类型。

A．模板

B．类

C．对象

D．函数