选出与句中划线部分意义最接近的解释，并将其字母代号填入答题卷相应的空格内。

小题1:The boy ran out of his money,so he had to walk to the hotel.

A．ran away

B．got out of

C．lost

D．used up小题2:The girl is good at playing bascketball.

A．do well in

B．did well in

C．do good in

D．does well in小题3:After try many times,we got successful in the end.

A．at present

B．at first

C．at last

D．at least小题4:All Chinese people raised money for the people in Yunnan.

A．collected

B．handed in

C．got

D．sent小题5:—I’m going to tell you something important.

-- Go ahead. We  are all ears.

A．We don’t want to listen.

B．We have ears.

C．We don’t mind.

D．We are listening to you.

试述财务杠杆原理。