题目内容
Only middle-class Americans benefited from the prosperity in the post-war era.
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下面程序运行后,输出的结果是
Dim arr(3,3)
For j=1 To 3
For k=1 To 3
Arr(j,k)=(j-1)*3+k
Next k
Next j
For j=2 To 3
For j=2 To 3
Print arr(k,j);
Next k
Print
Next j
甲公司自行建造某项生产用大型设备，该设备由A、B、C、D四个部件组成。建造过程中发生外购设备和材料成本7320万元，人工成本1200万元，资本化的借款费用1920万元，安装费用1140万元，为达到正常运转发生测试费600万元，外聘专业人员服务费360万元，员工培训费120元。2009年1月，该设备达到预定可使用状态并投入使用。该设备整体预计使用年限为15年，预计净残值为零，采用年限平均法计提折旧。A、B、C、D各部件在达到预定可使用状态时的公允价值分别为3360万元、2880万元、4800万元、2160万
A．expectB．exceptC．explodeD．example
Many theories about the origin of the ocean have been proposed by scientists. The most widely accepted one is that the earth at some time in its very early history became hot enough to melt the materials from which it was formed. While in this molten state, lighter rock-forming materials (造岩材料) floated on the surface of the heavier ones. Then, between four and a half four billion (十亿) years ago, the molten earth cooled sufficiently to form. a crust of rock that was many miles thick.
Surrounding the earth was an unbroken canopy of clouds miles thick and made up mostly of water vapor. Rain falling toward the still-hot earth was heated to steam and rose to the clouds again. After many millions of years, as the earth continued to cool, its surface temperature fell below the boiling point of water. Rainwater could now remain on the earth, covering its whole surface except for the higher places on earth that had been formed from the lighter rock materials.
In 1970, scientists had pieced together evidence that the lighter rock materials had formed one huge continent by a vast ocean. Then, about 200 million years ago, the great continent began to break up, the pieces moving slowly apart.
The onrushing waters of the single huge ocean now entered and filled the spaces between the separating continents--and became the several oceans and seas we know today.
This passage mainly talks about ______.
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