几何学主要研究(),通过用少量的几何图形和相应的符号表达式来描述立体图形。 A.空间

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问题:

几何学主要研究(),通过用少量的几何图形和相应的符号表达式来描述立体图形。

A.空间

B.形状

C.数字

D.加减乘除

考点:人文素养和科学素养的培育人文素养和科学素养的培育题库
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There are no peasants (农民) in Britain. The workers on a farm are called farm workers. The farmer pays them every week. There are not many workers on a farm. The farmers have many machines. The machines do most of the work. A farm with four workers is a big farm, and a farm with one worker is a small farm.

Britain does not grow rice. The summer is not hot enough. The most important grain crop in Britain is wheat. Wheat and other crops grow best in the east of Britain. In the west there is a lot of rain. Here grass grows very well. So, in the west of Britain, most farms are animal farms. They are not crop farms. The Britain winter is warm and the grass grows all the year. The animals live out in the fields and on the highlands all the year. The Britain people eat lots of meat and they drink lots of milk. Cattle give milk and meat, sheep give meat. Cattle and sheep farms are in the west. Pigs are on farms here and there.

Britain can now produce about half of its food. It doesn’t produce enough wheat, so some wheat is imported (进口) from other countries. Britain must also import all the hot climate food, such as rice, tea, coffee and so on.

Judge the following sentences true(T) or false(F) 根据短文内容判断正误(每题两分,10分)

小题1:In Britain, a big farm has only four workers.

小题2:The Britain summer isn’t very hot so rice doesn’t grow well in Britain.

小题3:In the west of Britain, there are lots of crop farms.

小题4:The animals can live out all the year because the Britain farmers don’t like to keep the animals inside in winter.

小题5:Britain can produce half of its food

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短文改错 (共10小题;每小题1分,满分10分)

Last weekend I went to the Summer Palace as usually. At about noon, I was enjoying my reading near a lake while suddenly I hear someone crying for help. I went up to see what was happening. I was shocking to find a little child struggling in the water in the distance while many peoples were standing by without doing anything. Without any hesitation, I had pushed through the crowd as I took off my coat, but jumped into the water quickly. I managed to reach him and carried him back to safety. To his great relief, the kid was saved. I was proud what I had done. I wish everyone could give the hand when someone else is in need.

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一个价电子构型为2s22p5的元素,下列有关它的描述正确的有           

A.原子序数为7

B.周期表中第一电离能最小

C.周期表中原子半径最大

D.周期表中电负性最大

题型:多项选择题

仪表显示当前发动机转速是6000转/分钟。

题型:多项选择题

物体所受摩擦力的方向与物体相对运动的方向 _________,有时起阻力作用,有时起动力作用。摩擦力可分为三类:_______摩擦;_______摩擦;_______摩擦。拧螺钉时钉在螺母中转动时的摩擦是_______摩擦,正常步行时,鞋底与地面之间的摩擦是________摩擦。钢笔写字时,笔尖与纸面之间的摩擦是____摩擦,人推车前进时,车轮与地面之间的摩擦是__________摩擦。

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