
八下回头看~
Quiz
•
Mathematics
•
8th Grade
•
Easy
Melody Meng
Used 8+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
2024年4月30日17时46分,神舟飞船再一次按计划准时准点从太空返回地面,中国航天员不断在太空创造新的纪录.下列四个以航天为主题的图案中,是中心对称图形的是
2.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
石墨烯在材料学、微纳加工、能源、生物医学和药物传递等方面具有重要的应用前景,它的分子结构如图所示,所有多边形都是正多边形,则∠ABC的度数为
135°
120°
105°
60°
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
下列从左边到右边的变形中,属于因式分解的是
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
x = -1
x = 0
x ≠ 1
x ≠ -1
5.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
无解
6.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
若一个点在第二象限,且它到x轴和y轴的距离分别为3和4,则这个点关于原点对称点的坐标为
(3,-4)
(-3,4)
(4,-3)
(-4,3)
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
下列命题中,假命题是
多边形的外角和都等于360°
三角形的中位线平行于第三边,且等于第三边的一半
两条直角边分别相等的两个直角三角形全等
如果ab=0,那么a=0,b=0
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