Whose T﹣shirt is this?Is it Sally's?
No,it isn't. is white.
My
Mine
Her
Hers
为得到函数的图象,只需将函数的图象()
设,,且、夹角为,则等于()
函数的零点所在的区间是()
已知三角形中,,则三角形的形状为()
()