P、Q两电荷的电场线分布如图所示，c、d为电场中的两点．一个离子

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问题不定项选择

P、Q两电荷的电场线分布如图所示，c、d为电场中的两点．一个离子从a运动到b(不计重力)，轨迹如图所示．则下列判断正确的是

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A．P带负电

B．c、d两点电势相等

C．离子在运动过程中受到P的吸引

D．离子从a到b，电场力做正功

答案

答案：C

填空题

单词拼写。

1. T_____ of families were killed and many children became orphans (孤儿).

2. He is so s_____ that no one can persuade him to do anything.

3. I have it on _____ (可信赖的) evidence that the hospital is going to be closed down.

4. My sister has just g from Beijing University.

5. She gave me a _____ (坚定的) look－the kind that said she would not change her mind.

6. _____ (三分之二) of the books have been sold out so far.

7. When the e_____ came, it was as if the world was at an end.

8. The man who is shaking hands with my father is a_____ (法官).

9. After the terrible flood, the city was in r_____.

10. their dispute has not been _____ (最后, 终于) settled yet.

单项选择题

上海金安贸易有限公司(3122242305)于2009年4月28日向海关申报复运出境一批原用于装载讲口货物的塑料托盘。
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请根据以上资料，选择以下栏目正确选项：

“运抵国(地区)”栏：

A．香港

B．中国香港

C．日本

D．中国