某高中生的下列行为中，属于参加政治生活的有 ①帮助居委会管理_爱下问搜题

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问题选择题

某高中生的下列行为中，属于参加政治生活的有

①帮助居委会管理社区卫生 ②为班级患病同学捐款

③向消费者协会投诉电话质量问题 ④在网上参与交通管理问题讨论

A．①②

B．②③

C．①④

D．③④

答案

答案：C

填空题

词组填空：根据所提供的语境，从方框中选择正确的短语填空完成句子。

by accident; on the contrary; as though; get away with; keep her word accounts for;
brought up; dress up; play a trick on; in memory of; cut down

1. Her mother died when she was two years old and he was _______ by her grandma.
2. They are talking so warmly and it looks _______ they were old friends.
3. The fact is that I earned my passage by working as an unpaid hand,which _______ my appearance.
4. We don't know whether he did it ________ or on purpose.
5. They said the weather there was hot;________ it was cold.
6. If you cheat in the exam,you'll never ________ it.
7. They set up a monument ________ those who died in the great earthquake.
8. The doctor advised him to ________ the fat and increased the fibre in his meal because of his heart disease.
9. She said she would be there at seven o'clock,and he thought she would ________.
10. If the neighbours do not give any sweets,the children might ________ them.

问答题简答题

带电断、接耦合电容器时应注意什么问题？