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问题 选择题
等腰梯形和矩形共有的性质①对角线相等；②邻角互补；③是轴对称图形．其中正确的是（　）
A．①②B．①③C．②③D．①②③
答案

B

题目分析：

等腰梯形和矩形的对角线相等，故①正确．

矩形的邻角互补，但等腰梯形的相邻底角不互补，故②错误．

等腰梯形和矩形都是轴对称图形．故③正确．

故选B．

填空题

根据首字母提示及句意填入适当的单词。

1. I'll study hard. I don't want to let my parents d_____.

2. The teacher r_____ to go to other schools.

3. We have p_____ of time to finish the job.

4. There are many s_____ in our school library

5. Don't w_____ about such small things. I can help you.

6. The old woman felt pain in her k_____.

7. AIl the people in Beijing are very h_____.

8. There are many people c_____ an old woman. What is happening?

9. The r_____ of the class have gone to the park.

10. The man with a red t_____ is my math teacher.

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单项选择题

在经济学中，广义的资源是指( )。

A．劳动力

B．资本

C．自然资源

D．经济资源或生产要素
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