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.
Beijing time, in the early morning of August 5th, Sun Yang defend title successfully with the score of 14 points 41 seconds 15 in 2013 swimming world championships men's 1500 meter freestyle finals. This is the third gold medal in this tournament for Sun Yang as well as the fifth goal of China’s swimming, which is slower 10 second 13 than the result of the London Olympic Games when Sun Yang achieves the champion. Sun Yang uses the score of his fifth goal in his career life to tie with the medal record that Luo Xuejuan keeps in the Chinese swimmer World Championship. He also becomes the person after Hackett in the 2005 Montreal World Championships and a single tournament winning the gold medal of “the king of long distance " in men’s 400, 800 and 1500 meter freestyle.
北京时间8月5日凌晨,2013年游泳世锦赛男子1500米自由泳决赛,孙杨以14分41秒15的成绩赢得金牌成功卫冕,这是孙杨本届赛事第三枚金牌,也是中国泳军收获的第五金,这一成绩比伦敦奥运会夺冠时慢了10秒13。 孙杨也以生涯五枚金牌的成绩,追平罗雪娟保持的中国游泳选手世锦赛夺金纪录,并且成为继哈克特在2005年蒙特利尔世锦赛后,又一位单届赛事包揽男子400、800和1500米自由泳金牌的“中长距离之王”!
I have a great mother. She cares much about me in my life and study.
In the morning, she gets up early to make breakfast for me. When I was little, she prepared my schoolbag. But now, she tells me to do it by myself. Because she thinks I have been old enough to do it. Besides, she always checks my homework. When I finish my homework, she checks it and points out the mistakes. She is very careful and helps me a lot.
I love my mother.
My favorite sports star------ Sun Yang
Born on December 1, 1991 in Zhejiang Province, Sun Yang is very tall and the height is 1.99 meters. He was from a sports family.
He won the China's first gold medal in men's swimming game. He worked a miracle. Sun Yang is not only gifted but also diligent. He keeps training and has tenacious willpower; these are worth learning by other people. Sun Yang is a new frontrunner at the sports worlds.
Sun Yang is very popular with the young. He is adorable, charming, childlike and cool. He is kind and has the vigor of youth, and he is a little shy. But Sun Yang is easy-going, always with a smile on his face when he faces our. He sings well and sounds beautiful. To my surprise, he likes dolls very much.
Sun Yang sets us a good example, and Sun Yang has set a new world record of swimming, of which the whole country’s people are proud
© 2022 xuexicn.net,All Rights Reserved.