09210012:如下程序 int a[10]={1,2,3,4,5,6,7,8,9,10},*P=a; 则数值为9的表达式是（ ）

多项选择题Which statements about the peaceful settlement of international disputes are correct? A、Where an international dispute may arise, the contending parties are under obligations to settle it by peaceful means. B、All states shall settle their international disputes by peaceful means in such a manner that international peace and security and justice are not endangered. C、Although any dispute in fact will involve some political considerations and overtly political disagreements may be resolved by judicial means. D、Two categories of approaches of resolving international disputes involved: diplomatic procedures and legal settlement.

单项选择题如果一个类继承了一个抽象类，但是没有完全重写父类的所有的抽象方法那么这个类也必须是抽象类。( )