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.
There is a news that makes me shocked. It is said that there happened a violent event in compus which cause 4 students injured and 2 dead. Some reasons arouse in this event.First, schools should try to avoid things like this, if the students are injured or dead, the schools have responsibility to them; second, families, especially parents should educate their children well, give them a good guide and take care of them; third, the society should control violent events. If the above three try their best and pay enough attention to them, things like this should be avoided.
一开始,我们一家人围坐在餐桌旁,开始互相寒暄。爸爸关切地问爷爷奶奶:“爸,妈,您们最近身体好吗?”“挺好的,不用担心。”然后爷爷奶奶就询问爸爸工作上的情况、我的学习等等。接着外公又嘱咐我说初三学习固然很紧要,但也一定要注意休息。总之,无非叙些家长里短不久,外婆和妈妈陆陆续续端来几道美味的菜,大家就又连连称赞。本来,我以为难得过节能这样一家人齐聚一堂,应该彼此有很多话想说,但谁知菜一上齐,大家就渐渐沉默了。有的开始只顾着看电视上的春晚,有的开始一心看手机新闻,最过分的是,连“吃”这一基本环节都被影响了,姑妈说:“各位稍等,请先别起筷,待我拍个照片发朋友圈。”她非但要将整桌子的菜摆成好看的形状,拍个“全家福”。还要给每一道菜都拍个特写。别人还可,两个年幼的表弟表妹可饿得等不及了,表妹撅起小嘴,抗议道:“这样光拍照,不吃,有什么意思呢?”惹得大家都乐了。
终于大家起筷,餐桌周围陷入了与春节的热闹气氛好不相衬的沉默之中。除了电视的声音,和手机的按键声,没有什么声音,偶尔有人在手机上看到有意思的新闻,说出来分享一下,也不过大家略议论几句就又安静下来了。别人没话说,表弟表妹可是非常想和大家聊天。他们不停的呼唤,餐桌旁的每一个人都喊了个遍,可是没有得到丝毫关注。最后,表弟无奈地说:“他们怎么都不理我们呢?不如我们两个一块儿玩算了。”于是两个小朋友就闷闷不乐地离开餐桌,一起到客厅玩玩具去了。
饭后,姑妈让我们上微信给她发的照片点赞。于是爸爸就找到她发的照片,给她点了赞。我看到照片旁还配了文字:“团年饭,一家人欢聚一堂,真是其乐融融!”可是,今晚大家都只顾着做自己的事情,餐桌旁缺少了应有的欢声笑语,只有尴尬的沉默,这样也能叫其乐融融吗?
餐桌前的谈话,不仅仅只是亲人之间的闲谈,更是寄托着亲人之间的爱与关怀。现在,交通条件比从前发得多,团圆已经并非难事。可是人们普遍变得更加浮躁,整天忙于做自己的事情,不懂得珍惜与家人团聚的时光,所以即使是在本该身心放松,与家人谈笑的聚餐时光,都只顾着看电视、玩手机等等,餐桌前的谈话就越来越少了。团圆的意味渐渐失去了。
一家人在餐桌前一齐吃饭,这是一幅美好的画面,而其中最美好的',便是餐桌前的谈话。我衷心希望有一天,餐桌前又总能听见温馨的谈话声。
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