“六一”节日那天,学校举行了抽奖活动。红红可幸运了,她抽到了一个塑料娃娃。它有一张红彤彤的脸颊,一双圆溜溜的眼睛,弯弯的尾毛,一张樱桃似的小嘴,它还穿着一件草绿色的连衣裙,戴着一顶毛绒绒黄帽子,真可爱!
?冬天的一个下午,寒风刺骨,外面下着纷纷扬扬的雪花,红红可不怕冷,她穿上棉衣,戴上手套,抱起娃娃就往外婆家走去。
到了外婆家,红红正想跟外婆说娃娃的事,突然,红红看见塑料娃娃低着头,像做错事的一样,把它的头扶起来又倒下去,扶起来又倒下去,而且,红红还看见娃娃脸上有一条条皱纹,像个老太婆,红红哭了。这时外婆看见了就走过去,不紧不慢地对红红说:“孩子,这是热胀冷缩的现象啊,娃娃肚子里的空气在天冷时候就浓缩,娃娃自然就变小了。不过,空气遇热时候还会膨胀,娃娃也会变胖了。”红红听了外婆的话,就拿来了一锅开水,她把娃娃捧在开水上面痛,过了一会儿,娃娃又变的像原来一样可爱了。
??通过这件事,红红知道了热胀冷缩的道理,她很开心!
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.
在去年的“六一”儿童节前夕,爸爸特意给我买了一个礼物——塑料娃娃。当我接到礼物时,高兴得都跳了起来。
我这个塑料娃娃非常奇特。她披着一头金黄色的长发,在阳光下一照,闪闪发亮,再加上那对羊角辫,显得格外精神。塑料娃娃的脸蛋红扑扑的,一对炯炯有神的大眼睛嵌在了面颊的上面。一个小鼻子微微翘起,一张樱桃似的小嘴笑个不停,她竖起一对小耳朵,仿佛在侧耳倾听什么。她穿着一身桔黄色的西服,胸前系着一朵蝴蝶结。看上去这只蝴蝶结翩翩起舞,就跟活了一样。她手上戴者一副白纱手套儿,脚下穿着一双油亮亮的红色小皮鞋,看起来像是个爱美的小姑娘。
有时,我一个人在家里非常孤独,就抱起塑料娃娃,同她一起去公园玩儿,叫她尝到人间的'欢乐。有时我高兴得和她一起谈话,有时问她问题,她就把嘴一咧,不回答。有时我没写完作业就去玩,她睁着大眼睛,似乎提醒我说:“写完作业再去玩!”当我学习有了进步时,她总是向我微笑,当我取得好成绩时,总忘不了亲一亲她,因为也有她的功劳。
我真喜欢我的塑料娃娃,她给我带来了无穷的乐趣,在知识的海洋里奉献出了自己的力量。
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