We should ______ it you would inform us of their financial standing and modes of business.

A．appreciate

B．be appreciated

C．oblige

D．be obliged

人类受到飞鸟和鱼的启发发明了飞机和轮船，这是( )

A．原型启发

B．酝酿效应

C．经验积累

D．顿悟