傍晚,数学期中学科竞赛的分数公布了。我考了46分,算个中上的成绩。罗嘉铭同学这次特殊发挥,取得了50分的满分成绩。全年级段只有6人才得到了满分。他可是我们班的“班宝”啊!差不多有十几个同学考到了48分的优异成绩,他们都错在同一个题目上:一段木头40米,锯了4米烂木头后,又锯了5次,问共有几段?每段几米?许多同学算出来是6段,把据掉的烂木头给忘算了。同学们都说这道题很“贱”,但我却不这么认为。我的.想法是这道题目出得不怎么好,有很多种理解。在这一点上,这道题出了很大的问题。
什么?你问我为什么只有46分,还有一题错在哪儿?慢慢来,慢慢来。听我给你解释:错得其中一题我不说你肯定也已经猜到了。至于错误的第二题,说起来还真有点可惜。我把4500当成了450,结果算错了。不过也有一点幸运,有一题我有点不会做,但经过我动脑筋终于做出来了而且还是对的,真是太开心了。
这次的学科竞赛给我留下了深深地印象。
The Role of Mobile Phone in People's Communication
The popularity of smartphones has exerted great influence on the way people communicate, so much so that an increasing number of individuals contend that face-to-face communication is being replaced by texts and images on the mobile phone.
There are more than one angle to consider this phenomenon. On one hand, it is pleasantly acknowledged that smartphones shorten the distance between families and friends. Even people from different sides of the globe can share pictures, feelings and thoughts through various types of apps on the phone, thus building a long-distance connection. On the other hand, as the picture warns us, too much smartphone addiction interferes with people's real-life communication. Statistics show that over 70 percent of face-to-face communication consists of facial expressions and body language, which is why people should stay away from mobile phones when they have the chance to actually talk and communicate with others.
In a word, mobile phones act as an appropriate platform where people can always stay in tough however long the distance is, but a wise man should know when to put down his phone.
下午,清脆的上课铃声响了。同学们像潮水般涌进了实验室,并且以最快的速度跑到自己的座位上。这时,老师满面笑容地走进了教室。
老师对我们说了声 “ 安静 ” 便转过身去,在黑板上写了 “ 问题 ” 两个大字,然后让我们提几个关于肥皂泡的问题。同学们都踊跃举手,老师指了指我。我站起来说: “ 泡泡为什么会飞呢? ” 接着又有很多同学提出了各种各样有趣的问题。有的问泡泡为什么是五颜六色的?有的问泡泡为什么会炸掉?还有的问为什么不同的管子可以吹出不同的泡泡? …… 老师要求我们通过实验来解释这些问题。
同学们迫不及待的拿出早已准备好的材料,开始做实验了。我们先在瓶子里装了水再放一些洗衣粉,摇一摇,等他们变成了肥皂水就开始吹泡泡了。
我首先吹了一个小泡泡,小泡泡刚刚离开管子便迅速落到地上炸了。我又照着上次的样子吹了个不大不小的`泡泡,它在我头顶飘了一会儿,还是炸了。后来我又吹了一个大泡泡,只见它腾飞而起,飞出教室,越飞越高,直到飞得看不见为止。我兴奋的跑到老师跟前,说道: “ 老师,我知道了,我知道了! ” 老师问: “ 你知道什么了? ”“ 我知道泡泡会飞就是因为里面的气体,里面气体越多,泡泡就飞得越高! ” 老师听了我的话微笑的点了点头。这时,我们的周围漂浮着五彩缤纷的泡泡,它们有点小,有的大,有的高,有的低。同学们也在七嘴八舌的议论着谁的泡泡吹的大,飞得高。
下课铃响了,一堂快乐的课学科也随之结束了。我望着漫天飞舞的泡泡愉快的离开了实验室。
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