一般来说，一种生物不会由于个体死去而导致该物种的灭绝．这是因为生物有（　　）

A．生理现象

B．生殖作用

C．遗传性

D．适应性

His behavior at the party last night seemed rather_______. Many of us were quite

surprised.

A．out of practice

B．out of place

C．out of order

D．out of pity