根据短文内容及首字母提示完成下列短文。

      Tracy and Marie are in the same school.  They are good friends.  They have a lot of friends, too.

They are very l. p_____ in the school. In some ways they look the 2. s_____and in some ways they

look 3. d _____. Sometimes they have different 4. v _____and 5. i_____ . They are both good at

6. p_____ basketball, although Marie is more 7. a _____ than Tracy. Tracy is quieter, but Marie is

more 8. 0_____. Tracy is more serious, but Marie is 9. f_____. she always makes us 10. 1_____.

在机会研究阶段，敏感性分析常采用的指标有( )。

A．净现值和投资收益率

B．投资回收期和投资收益率

C．内部收益率和投资回收期

D．净现值和内部收益率