低年级科学常识比赛
Biology, Other Sciences
1st - 3rd Grade
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
请选出正确答案。
U 形磁铁
马蹄形磁铁
条形磁铁
环形磁铁
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当磁铁异极互相靠近时就会________.
相斥
相拉
相吸
相推
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当磁铁同极互相靠近时就会________.
相斥
相排
相吸
相拉
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
每块磁铁都有两个磁极， N叫____ ,
S叫___.
东极，西极
北极， 南极
南极，东极
南极，北极
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
磁铁能吸引的磁性物体越多，表示磁力越强。
对
错
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项不是磁性物体？
钥匙
塑料瓶
回形针
铁钉
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项不是磁铁在日常生活中的用处？
白板
纸盒
冰箱
黑白棋盘
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