关于钢结构的特点叙述错误的是（）A.建筑钢材的塑性和韧性好 B.

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问题单项选择题

关于钢结构的特点叙述错误的是（）

A.建筑钢材的塑性和韧性好

B.钢材的耐腐蚀性很差

C.钢材具有良好的耐热性和防火性

D.钢结构更适合于建造高层和大跨结构

答案

参考答案：C

填空题

用适当的介词填空。

1. There are two windows_____ the wall.

2. The broom is_____ the door. I can't see it.

3. There is a dog_____ the tree. It can't get down.

4. Where is the photo_____ your family?

5. There are some big apples_____ the tree.

单项选择题

（）

A.1

B.2

C.3

D.4