平面图形中的各线段，可分为三种：（）。
A.已知线段
B.中间线段
C.连接线段
D.独立线段
参考答案：A, B, C
Mary didn't accept the flowers,________,she didn't forgive me,which made me sad. [ ]
A.in other word
B. that were to say
C.in other words
D. or rather
什么叫焊缝金属的熔合比？
