________ the program，they have to stay t

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问题选择题

________ the program，they have to stay there for another two weeks.

A．Not completing

B．Not completed

C．Not having completed

D．Having not completed

答案

答案：C

答案　C

填空题

△ABC中，D、E、F分别为AB、BC、CA的中点，若△ABC的周长为36cm，面积为54cm²，则△DEF的周长为______cm，面积为______cm²．

单项选择题

已知年名义利率为10%，每日计息1次，按复利计息，则年有效利率为( )。

A．10.25%
B．10.38%
C．10.47%
D．10.51%