四年级科学总复习

Quiz
•
Science
•
4th Grade
•
Medium
LEE Moe
Used 69+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项是地球自转的方向?
由东向西
由南到北
由西向东
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地球上的昼夜是怎样形成的?
地球的公转
地球的自转
地球是太阳唯一的行星
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
汽车用什么电源来启动引擎?
干电池
蓄电池
发电机
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项是运用光会反射的原理所制造的用具?
口腔镜和潜望镜
口腔镜和眼镜
眼镜和万花筒
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项是使用可更新能源的好处?
加速全球暖化
能源更快枯竭
减少温室效应
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中显示一个工人用手推车推着一些砖块。
J,K,L分别代表什么?
J=支点,K=重点,L=力点
J=重点, K=支点, L=力点
J=力点,K=支点,L=重点
J=支点, K=力点, L=重点
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中显示一个复杂机械。它应用了哪些简单机械的原理来操作?
杠杆和尖劈
齿轮和螺旋
轮轴和斜面
轮轴和螺旋
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