1. 以下哪些是光源?
二年级科学单元六 光和暗 (评估)

Quiz
•
Science
•
2nd Grade
•
Easy
TE Moe
Used 13+ times
FREE Resource
18 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
以下哪些不是光源?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当光被阻挡时,就会形成___________。
形状
影子
阳光
动物
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以上的物体会产生怎样的影子?
没有影子
清晰的影子
模糊的影子
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
月亮、镜子和水面是光源吗?
是
不是
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物体的形状是圆的,那么物体的影子是什么形状的?
三角形
正方形
圆形
长方形
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
路灯的重要性是什么?
看清路况
发生意外
影响视线
可以吓人
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