科学 三年级 复习
Authored by Kai Yen Toh
Mathematics
9th Grade
Used 546+ times
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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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