道德可以分为三种类型，即家庭道德、个人道德和职业道德。
参考答案：错
______ such a heavy loss in the earthquake, they got help from all over the world.
A．Suffer
B．Having suffered
C．Suffered
D．To suffer
什么是最小抵抗线？它包括哪些基本含意？
