As a member of the Youth League, you should _________ other students. 　[ ]

A. give an example of　　

B. set an example to

C. make an example for 　

D. take an example for

烃类热稳定性一般规律排列正确的为( )。

A．缩合芳烃＞芳香烃＞环烷烃＞炔烃
B．缩合芳烃＞炔烃＞芳香烃＞环烷烃
C．环烷烃＞炔烃＞芳香烃＞缩合芳烃
D．缩合芳烃＞环烷烃＞炔烃＞芳香烃