二年级科学 - 光和暗(总复习)
Quiz
•
Science
•
2nd Grade
•
Easy
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25 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
什么是光源?
会发光的物体
光的成分
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪个是光源?
风扇
电灯
衣服
食物
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪个是人类最主要的光源?
月亮
彩虹
太阳
星星
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
影子为什么会形成?
天黑了会形成影子
光被阻挡了
光穿过物体
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
当光被不透明体阻挡时,就会形成_______。
阳光
反射
声音
影子
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪个物体被光阻挡时会形成模糊的影子?
卡纸
石头
透明胶片
毛玻璃
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
不透明体可以形成怎样的影子?
没有影子
模糊的影子
清晰的影子
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