搜题请搜索小程序“爱下问搜题”
问题
填空题
( )的平行四边形是矩形。
答案
对角线相等
选择题
∠A=75°,则∠A的补角是( )
A.15°
B.25°
C.105°
D.115°
查看答案
选择题
— I wonder how much you charge for your services.
— The first two are free _____ the third costs $30.
A. while
B. until
C. when
D. before
查看答案