社会保障的总目标是帮助国民摆脱生存危机。（）
参考答案：错
A．(A) They are dominating.
B．(B) They are not respectable.
C．(C) They are persuasive.
D．(D) They are very helpful.
大蒜品种乐都紫皮大蒜的特征特性有哪些？
