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Y3 SC 第三课 认识我们的牙宝贝

Authored by E E

Science

1st Grade

Used 11+ times

Y3 SC 第三课 认识我们的牙宝贝
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28 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

小孩有多少颗乳牙?

10
20
12
32

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

成人有多少颗恒牙?

32

23

20

30

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

人类一生中可长出几次牙齿?

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

乳牙共有______颗,而恒牙共有________颗。

18、20

20、32

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

乳牙只能维持到大约________岁,而恒牙则可以维持__________。

6,一辈子

12,一辈子

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

牙齿的哪一个部分让人感到冷和热?

牙龈

釉质

神经

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

以下哪项是防止蛀牙滋长的方法?

饭后不漱口

不吃水果和蔬菜

经常吃糖果

定时让医生检查

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