Why did English people get a last name?
A. Because they liked to do so.
Because they wanted to tell others what their parents did.
C. Because they found it very difficult to tell who was who only by the first names.
D. Because they wanted to tell the differences between their fathers.
Where might the English people have got their last names from?
A. The place where they lived.
B. The people they lived with.
C. Their mothers’ names.
D. The beautiful people.
What did the English people have for their names a long time ago?
A. They had no names.
B. They only had family names.
C. They only had first names.
D. They had no first names but family names.
有一投资方案,第一年年初投资40000元,当年年末的净现金流量为6000元,以后5年的净现金流量均为9000元,假定折现率为6%。该投资方案的净现值是多少?方案是否可行?_____
A. =NPV(6%,6000,9000,9000,9000,9000,9000)-40000,可行
B. =NPV(6%,6000,9000,9000,9000,9000,9000)-40000,不可行
C. =PV(6%,6000,9000,9000,9000,9000,9000)-40000,可行
D. =PV(6%,6000,9000,9000,9000,9000,9000)-40000,不可行
微信支付 
支付宝支付