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四年级科学总复习

Authored by LEE Moe

Science

4th Grade

Used 71+ times

四年级科学总复习
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25 questions

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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

Media Image

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

Media Image

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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