_____no doubt that someone _____ the woo

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问题选择题

_____no doubt that someone _____ the wooden box containing the most precious treasures from

the carrier under the cover of darkness.

[ ]

A. It is; removed

B. There is; removed

C. It is; moved

D. there is; moved

答案

答案：B

选择题

把x²-2xy+y²-2x+2y的二次项放在添“+”号的括号里，把一次项放在添“-”号的括号里，按上述要求完成并正确的是[ ]

A. x²-2xy+y²-2x+2y=(x²+y²)-(2xy+2x-2y)

B. x²-2xy+y²-2x+2y=(x²-2xy+y²)-(2x-2y)

C. x²-2xy+y²-2x+2y=(x²+y²)-(-2xy-2x+2y)

D. x²-2xy+y²-2x+2y=(x²-2xy+y²)-(-2x+2y)

单项选择题

对某些投资回报率稳定、收益可靠的基础设施和基础产业投资项目，以及经济效益好的竞争性投资项目，经国务院批准，可以试行通过发行( )或组建股份制公司发行股票方式筹措资本金。

A．金融债券
B．可转换债券
C．市政债券
D．企业债券