留学知识库
5个大球和3个小球共重47克,5个小球和3个大球共重41克,问大球和小球分别重多少克?
正方体的棱长为1,它的顶点都在同一个球面上,求这个球的表面积
-----Are you coming to my birthday’s party?
直线3x+根3y+6=0与直线x+(a-1)y+(a的平方-1)=0没有公共点求a的值
已知三角形的三边长为6,10,14,则该三角形的最大内角是多少
I_____ he is still staying in Beijing.
The airliner was half an hour late,so I_____to the airport.
Which of the following sentences is wrong?