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问题 填空题

17乘230的算式是______，积是______．

答案

17×230=3910．

所以，17乘230的算式是17×230，积是3910．

故答案为：17×230，3910．

单项选择题

某股份有限公司于2008年7月1日，以50万元的价格转让一项无形资产所有权，同时发生相关税费3万元。该无形资产系2005年7月1日购入并投入使用，其入账价值为300万元，预计使用年限为5年，法律规定的有效年限为6年，该无形资产按照直线法摊销。转让该无形资产发生的净损失为( )万元。

A．70

B．73

C．100

D．103
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单项选择题

The sun today is a yellow dwarf star. It is fueled by thermonuclear reactions near its center that convert hydrogen to helium. The sun has existed in its present state for about 4 billion, 600 million years and is thousands of times larger than the Earth.
By studying other stars, astronomers can predict what the rest of the sun’s life will be like. About 5 billion years from now, the core of the sun will shrink and become hotter. The surface temperature will fail. The higher temperature of the center will increase the rate of thermonuclear reactions. The outer regions of the sun will expand approximately 35 million miles, about the distance to mercury, which is the closest planet to the sun. The sun will then be a red giant star. Temperatures on the earth will become too hot for life to exist.
Once the sun has used up its thermonuclear energy as a red giant, it will begin to shrink. After it shrinks to the size of the earth, it will become a white dwarf star. The sun may throw off huge amounts of gases in violent eruptions called nova explosions as it changes from a red giant to a white dwarf.
After billions of years as a white dwarf, the Sun will have used up all its fuel and will have lost its heat. Such a star is called a black dwarf. After the Sun has become a black dwarf, the earth will be dark and cold. If any atmosphere remains there, it will have frozen onto the earth’s surface.

As a white dwarf, the sun will be ______ .

A．the same size as the planet Mercury
B．thousands of times smaller than it is today
C．around 35 million miles in diameter
D．cold and dark
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