简支梁试验荷载工况一般应选取______。

A．跨中最大正弯矩工况

B．跨中最大负弯矩工况

C．支点最大正弯矩工况

D．支点最大剪力工况

Avatar (《阿凡达》) is such __________ wonderful science movie that I want to see it __________ second time.

A．a; a

B．a; the

C．/; the

D．/; a