三年级科学(第三课:人类)

Quiz
•
Science
•
1st Grade
•
Medium
Elvis Loh
Used 37+ times
FREE Resource
21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
人的一生中会长出几副牙齿?分别是什么?
两副(乳牙和恒牙)
三副 (门牙、乳牙和恒牙)
三副 (门齿、臼齿和犬齿)
两副(乳牙和智慧牙)
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
牙齿分为三种,它们是
门齿、犬齿和智齿
臼齿、犬齿和智齿
门齿、犬齿和臼齿
门齿、臼齿和智齿
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
门齿的功能是什么?
切断食物
撕裂食物
磨碎食物
咀嚼食物
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
犬齿的功能是什么?
切断食物
撕裂食物
磨碎食物
咀嚼食物
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
臼齿的功能是什么?
切断食物
撕裂食物
磨碎食物
咀嚼食物
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
乳牙一共有多少颗?
12
16
18
20
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
恒牙一共有多少颗?
20
26
30
32
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