

2年级科学 电
Interactive Video
•
Science
•
2nd Grade
•
Practice Problem
•
Hard
CHING KPM-Guru
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么东西让灯泡亮起来,让风扇转动?
魔法
电
水
火
2.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
您喜欢这个视频课程吗?
是的
不是
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一个完整的电路至少需要哪些元件?
干电池、开关和灯泡
只有干电池和灯泡
只有开关和灯泡
只有干电池和开关
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果灯泡不亮,可能是什么原因?
干电池电量耗尽
灯丝烧坏
开关没有按下
以上都是
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪种材料是电的绝缘体?
橡胶
铁
铜
铝
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