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四年级上册复习

Authored by tao wu

Science

1st - 5th Grade

Used 7+ times

四年级上册复习
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30 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1、声音是由物体       产生的。

振动

移动

摆动

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

当物体停止振动后        (会/不会)发出声音。

不会

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

力的单位是?

帕斯卡

千克

牛顿

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

游泳时听不到声音?

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

鞋底的花纹是为了( )摩擦力?

减小

增大

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

食物中的淀粉遇到碘酒会变成蓝色。

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

多吃脂肪会发胖且易得病,所以含有脂肪的食物我都不吃。

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