三年级科学- 人类
Quiz
•
Science
•
9th - 10th Grade
•
Practice Problem
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Medium
Wansi Lee
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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
M牙齿有什么功能?
切断牙齿
消化食物
磨碎食物
把食物撕裂
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
以下哪项不是恒牙的特征?
大约在6个月时长出
能维持一辈子
釉质和牙本质较厚
总数有32颗牙齿
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
蛀牙是由什么生物造成的?
细菌
蠹(dù)虫
螨 (mǎn)虫
蛔 (huí)虫
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
吃完午饭后,秀芳发现牙缝中有食物残渣。她可以用什么来进行清理?
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
哪项有关恒牙的说明是正确的?
有32颗牙
能维持一辈子
在六岁后开始长出
与恒牙相比,较不坚固
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
以下哪个行为会破坏牙齿?
补牙
装置假牙
经常吃甜食
进行牙根治疗
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
门齿的功能是什么?
切断食物
消化食物
磨碎食物
撕裂食物
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