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.
最后他决定去学校啦,穿好衣服,往学校去了,半路上就在想怎么讲课,后来一想还在高三啦,没有多少讲的课,大部分时间都是在复习,所以他的担忧暂时没了,但是他的家里他又不知道,回去肯定暴漏身份,该怎么办呢,最后他决定去找张宇,想想办法,而那边张宇呢,也在想办法,他突然变成李奕啦,把他吓拉一跳,一上午也一直在想办法,而这时真正的李奕也过来找他了,他们一看都是一个想法,很高兴,他们上一边想办法了,可是最后也没想个好办法,最后他们讨论的睡着啦,而这时李奕给惊醒啦,一看周围的环境,都是自己的家,他自己拍啦拍自己的'胸口,幸亏是梦,假如真要那样,自己都不知道要怎么办了,他又睡过去啦,早上吃完早饭,骑着车子上学去啦,还唱着歌,明显的高兴,因为,那是梦,不是现实,过啦5分钟,他到班里了,都没有变,过啦一会,他的老师张宇来了,他过来找李奕啦,问他是不是做啦一个很奇怪的梦,他一听说有,然后两个人开始谈做梦的细节,好多人也在听他们讲故事,后来终于讲完了,同学也在说幸亏是梦,假如是李奕当啦老师,那就完蛋了,成绩都得退步。
他和老师一听,也说,幸亏没有交换,要不然双方的家长和家里会发生大事情,都拍啦拍自己的胸口,惊险。
一个秋高气爽的早晨,我和妈妈一起去锻炼。
我们来到了锻炼的体育器材场,我们就开始锻炼了。我先锻炼了一个有点像自行车一样的体育器材,它是锻炼我的手臂的。我就按照了它的说明来做,先把手放在像自行车的车把上,然后,再用吃奶的力气往下一拉,又接着再往上一推,就这样连续做。妈妈锻炼的体育器材像一张床,人躺在它的上面。然后,用手抱住头,脚就勾住下面的'横杆,使劲使自己的头再抬起来,就这样反复的做。原来它做的是仰卧起坐呀。我们又锻炼了一会,那个时候我已经是气喘吁吁了。
今天,虽然我们锻炼的很累,但是我们健康了我们的身体,而且这样还可以预防感冒呢!
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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.
下面谈谈学习毅力的.问题。如果你有坚强的毅力,那么世界上就没有什么难事。学英语关键是能够持之以恒。
在学习过程中,你应该制订一个计划,一天记住几个单词,一天记住一两个句型。你不要小看“持之以恒”的力量。举个例子:
如果你一天背5个单词一年就是1825个单词,相当于初中三年再加高中一年零两个月的词汇量。如果你坚持两年你就能住3650个单词,相当于中学六年包括本科两年的词汇量。
在制订计划时要遵循以下几项原则:
1、计划要切实可行,不要好高务远。上面的例子已经说明,只要你能坚持天天学习,英语一定能学好。
2、要有坚强的毅力,每天都学习,不因为某些事而耽误了学习。如果哪天的工作没有完成,第二天一定要补上。连续不学习的时间不要超过两天。
3、要有一个帐本,哪天学会了哪几个单词,哪几个句型一定记录在案。
4、为了把单词、句型真正学到手,第二天一定要复习第一天的,第三天一定要复习第二天和第一天的内容。
5、所选择的课本可以是一套或两套,千万别太多。实际学英语的书没有什么好坏之分,只要你能按照一套或两
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