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问题 实验题

利用现代信息技术进行的实验叫做DIS实验，DIS由传感器、________和________组成．如图所示为“用DIS测变速直线运动的瞬时速度”实验的装置图，图中①所示的器材为：（    ）

A．位移传感器．

B．速度传感器．

C．时间传感器．

D．光电门传感器．

答案

DIS由传感器、数据采集器、计算机组成。图中①所示的器材为：光电门传感器，选D

填空题

根据句意及首字母或汉语提示完成句子。

1. It has been dry these days. You should w _____ the flowers as soon as possible.

2. Most of the w _____ animals living in the forest are dangerous.

3. Most of the students are a _____ the rule. They think teenagers shouldn't work at night.

4. We are proud of the four famous inventions in a _____ China.

5. I'm sorry I have l _____ my bike to Jim. You have to borrow one from others.

6. Would you like something _____ (别的) to drink?

7. We should go to school _____ (穿着) our school clothes on Monday.

8. I won't forget the _____ (经历) that I had last year.

9. Thanks for your _____ (建议). I'm sure they will be useful to my study.

10. At last he _____ (成功地) finished the work in time.
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判断题

矿井供电系统主要作用是获得、变换、分配、输送电能。（）
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