如图甲所示，A、B是某电场中一条电场线上的两点，一个带负电的点

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问题不定项选择

如图甲所示，A、B是某电场中一条电场线上的两点，一个带负电的点电荷仅受电场力作用，从A点沿电场线运动到B点，在此过程中，该点电荷的速度v随时间t变化的规律如图乙所示。则下列说法中正确的是

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A．A点的电场强度比B点的大

B．A、B两点的电场强度相等

C．A点的电势比B点的电势高

D．A点的电势比B点的电势低

答案

答案：C

填空题

单词拼写

根据下列句子所给汉语意思,写出空缺处各单词的正确形式.

1. The travel agent will make good 1 (准备) for our tour to London.

2. The police did not go near the 2 (抛弃) car, fearing it was a booby trap(饵雷).

3. Health officials have tried to raise people's 3 (意识) about AIDS.

4. To attract foreign tourists, Panama has 4 (调整) its economic laws.

5. The people who live 5 (对面) are always making a lot of noise.

6. Nowadays many countries are 6 (思考) on how to promote the growth of their economy.

7. We all agreed to 7 (推荐) the monitor's suggestions to the school governors.

8. There are two 8 (政治) parties in the US--the Democratic Party(民主党) and the Republican Party.

9. The bus is designed to 9 (运营) in all weather conditions.

10. When Mary finally appeared, she made a(n) 10 (歉意) to Tim for her being late again.

名词解释

甲类传染病