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问题 解答题
学生参加环保行动要运2吨垃圾．五年级运了垃圾的
3
5
，六年级运了垃圾的
1
8
．余下的留给四年级运，四年级运了垃圾总数的几分之几？
答案

1-

3
5
-
1
8
．

=

2
5
-
1
8
，

=

11
40
．

答：四年级运了垃圾总数的

11
40
．

多项选择题

励磁控制系统的稳定性包括（）。

A.静态稳定性

B.电压稳定性

C.空载稳定性

D.负载稳定性
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填空题

根据汉语提示，完成句子。

1. Many new ________ (发现) were made with the help of compass.

2. "Every dog has its day" ________ (意思是) each person has good luck sometimes.

3. Read the ________ (下面的) ways and see if they can be used widely.

4. _______ (相信) in yourself is the first step on the road to success.

5. We should make great contributions to ________ (建设) a harmonious society.

6. Kangkang _______ (宁愿) to wait for another hour rather than wake up other students.

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