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科学 三年级 复习

Authored by Kai Yen Toh

Mathematics

9th Grade

Used 546+ times

科学 三年级 复习
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24 questions

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1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

请问门齿的功能是?

把食物磨碎

把食物撕裂

把食物切断

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

请问犬齿的功能是?

把食物磨碎

把食物撕裂

把食物切断

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

请问臼齿的功能是?

把食物磨碎

把食物撕裂

把食物切断

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

釉质的构造是?

让我们感觉冷或疼痛

围绕牙齿的根部

牙齿的最外层

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

牙龈的构造是?

为牙齿提供营养

让我们感觉冷或疼痛

围绕牙齿的基部

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

请问乳牙有几颗?

32

20

18

17

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

乳牙大约在几时会长出?

2个月

4个月

6个月

1岁

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