the sun rises in the east and sets in the west, which is caused by the rotation of the earth as you all know. but have you ever thought of the effect of the earths rotation on man and can you imagine what would happen if the earth stopped rotating?
the radius of the earth is about 6,370 kilometres. it takes the earth 24 hours to rotate once. objects on the earths equator move with the earth at a speed of 460 metres per second, and the air close to the earths surface turns at the same speed. if the earth stopped rotating suddenly, the air would keep flowing eastward at a speed of 460 metres per second. the wind would be fourteen times as powerful as a hurricane. at the same time sea water would rush eastward at a speed of several hundred metres per second, which might do damages much greater than a seaquake would do. obviously, men could hardly stand such a catastrophe.
even if such a catastrophe would not happen, there would be a great temperature difference on the two hemispheres of the earth, and the four seasons of the year would no longer occur because a day and a night would be as long as a whole year instead of 24 hours. all this would greatly affect the life of human beings, imals and plants and that would cause worse results than anything imaginable.
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Different people have different views on_____.Some people think that_____,whereas others aegue that __________.
As far as I am concerned, I agree with the opinion that ___________.For one thing,I firmly believe that ___________.For another,_____________.Just think of________,who/which_______.
Taking all these factors into consideration,we may safely come to the conclusion that______.Only if_______can we _______,just as the saying goes,________________.
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In recent years there have been many reports of ________.It turns a new chapter of _________in China,and will have far-reaching effects in the forthcoming years.
The biggest benefit,in my eyes,is that_______.In addition,_______.Finally,______________.
Apart from the benefits mentioned above,we should also face several unavoidable challenges.In the first place,_____________.In the second place,________.What’s more,_______________.In summary,we should_______________.
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Nowadays more and more ______are commonly and widely used in everyday life,ranging from __________to_____________.
The popularity of _______will have a great influence on ______.On the one hand,_________.On the other hand,__________.
To conclude,____________are just like a double-edged sword.With them we may________.However,one point should be kept in mind that we should make sensible use,always being a master instead of slaving of them.
小狼狗满房间地跑。他跑得很快,妈妈跑得很慢,因为她的'围裙长长的,不好跑。“给我站。站住!”狼狗妈妈追得气喘吁吁,小狼狗早就跑得无影无踪了。狼狗妈妈只好自己吃饭了。
晚上,小狼狗超饿(此处可以改为“肚子饿得咕咕叫”),就去冰箱里拿鸡腿。冰箱里只有一个鸡腿,小狼狗吃掉了鸡腿,还是饿得睡不着。第二天,他起床走到卫生间去洗脸,那里有一面镜子,他洗完脸抬头一看,镜子里的自己像熊猫一样,有两个黑眼圈。小狼狗吃惊地说:“啊!原来我长得这么难看!”之前,小狼狗一直觉得自己很帅很帅。他大哭起来:“哇哇哇哇哇哇哇!”狼狗妈妈被吵醒了,“儿子,一大清早你在叫什么呀?”妈妈过来一看,“哇!宝贝,你居然有黑眼圈!”“妈妈,我昨晚数了羊还睡不着。”
以后,小狼狗再也不要妈妈追着吃饭了。
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