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.
尊敬的家长:
您好!
时间过的真快,在您的支持和配合下,我们已经顺利完成了20xx年小新星英语春季班的学习。在春季班的学习中,我们始终从激发孩子的英语学习兴趣出发,利用实物,多媒体课件,肢体语言,歌谣,律动,游戏活动等方式帮助他们建立了学好英语的自信心,孩子们也领悟到了英语学习的快乐。在听、说、读、写上,我们专业的英语教师都对您的孩子进行了全面悉心的辅导和强化检测。
在这一学期中,我们发现孩子们无论在学习成绩,学习态度和学习习惯方面都或多或少有了些进步,当然也还有不足的地方,以下是老师对您孩子本学期的评价语:
炎热的暑假生活即将到来,为了让您的孩子度过一个充实而有意义的假期生活,我校将于7月份展开暑假班的教学,比如,针对低年级学生,我们开设了音标班,针对高年级学生,我们开设了预科班;在暑假班的教学中,我们会着重亢实孩子们的基础知识,同时我们也会辅导孩子们完成假期作业。欢迎带您的孩子前来报名!
最后,感谢您的理解和支持,并真诚地希望您对我们的工作提出宝贵的意见和建议。祝您身体健康、合家幸福!
小新星英语学校
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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.
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