下面的性质中，平行四边形不一定具备的是[ ]
A. 对角互补
B. 邻角互补
C. 对角相等
D. 对边相等
答案：A
The two words have something ______ with each other. [ ]
A. in difference
B. in ordinary
C. in common
D. in same
震源体积
