人生像条河,奔流而去,路上有无限坎坷。德国天文学家开普勒,一生多灾多难,天花病把他弄得疤痕累累,猩红热又弄坏了他的眼睛,失学后,良师去世,妻子病亡,一连串的打击,并没有把他阻碍,反而激发了他的斗志,终于在51岁那年发现了天体运行的三大规律,在天文史上写下光辉的一页。如果开普勒不不向困难发出挑战,不拍击人生之河中的暗礁,他就不会成功。当一次次的困难,一次次挫折中,你倒下了吗?你努力了吗?你向人生中的暗礁冲击了吗?朋友想想吧!
人生象条河,无限坎坷与曲折,你是否努力,把坎坷克服。思克是一个伟大的科学家,通过201次的实验才发现小儿麻痹症疫苗。有人问:“你最终的发现是伟大的,你是如何看待前面200次失败的?”他回答说:“在我的生活中,从没有任何失败,我所关心的是通过这件事,得到了什么样的?学到了什么东西?我如果没有前面200次的经验就不会有第200次的`成功。”人生之河不会风平浪静,当坎坷来临时,你是怎样面对的呢?是像思克那样克服困难,取得成功,把坎坷踩在脚下,还是一蹶不振。朋友,只有把坎坷甩在身后,你才会成功,才会使人生之河风平浪静。
人生是一条河,河道中也会有礁石。在体坛上有这样一个新星,他曾两次逼近世界冠军。第一次,他代表中国去参赛,还未参赛他用小刀把手割破,声称遇刺。第二次,在比赛中,他已逼近冠军,领先对手一大段距离,他却放弃了。他没有向困难发出挑战,不自信所以没有成功。
朋友,纵观世界,如果没有战胜困难的信心,没有惊人的毅力,那贝多芬,就不会谱写出惊世之作;如果没有战胜困难的信心,徐霞客就不会游经名山大川,就不会有着作——《徐霞客游记》;如果没有战胜困难的信心,李时珍就不会尝遍千种草药,写出《本草纲目》;如果失去毅力,曹雪芹就不会写出名着《红楼梦》。战胜困难的信心,在支持着他们,使他们战胜困难,战胜挫折,使人生之河,汇入大海。
人生之河不一定平静,但人生之河掌握在你我手中,朋友未为了让人生之河流得更远,朋友你努力了吗?在挫折面前你低头了吗?朋友努力吧!让人生之河的浪花努力击打着河道中的礁石,让人生之河,勇往直前汇入汹涌澎湃的大海!
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.
It ______ ______ ______ the train will be late.
答案:is likely that
2. It is likely that the typhoon will sweep across the island.
The typhoon ______ ______ ______ ______ across the island.
答案:is likely to sweep
3. I think trying to stop the couple quarrelling will be of no use.
I think it's ______ ______ ______ to stop the couple quarrelling.
答案:no use trying
4. Every time I was in trouble, he had no hesitation in helping me.
Every time I was in trouble, he came to help me ______ ______.
答案:without hesitation
5. He never hesitates to help if I have any problem.
He always helps me ______ ______ if I have any problem.
答案:without hesitation
6. I crossed the street so as not to meet him, but he saw me and came running towards me.
I crossed the street to ______ ______ him, but he saw me and came running towards me.
答案:avoid seeing
7. It seems that the students in that class have all passed the qualified exam.
All of the students in that class ______ ______ ______ ______ the qualified exam.
答案:seem to have passed
8. It seems that the boys of the class are playing football on the playground.
The boys of the class ______ ______ ______ ______ football on the playground.
答案:seem to be playing
燕子喜欢停在电线上,一双肉色的小爪子紧紧地抓住电线。它全身的羽毛乌黑光亮,光彩照人。头上的羽毛像一顶黑帽子。如果说背上的羽毛像穿了一件黑色西服的话,那腹部的羽毛就像给小燕子穿了一件雪白的衬衫。整个看上去,就像一位绅士。燕子活泼机灵,小小的脑袋上嵌着宝石般的眼睛,剪刀似的尾巴保持着身体的平衡。
燕子呢喃细语,喜欢在水面上舞蹈,一眨眼,又轻轻地停到电线上了。它一动不动地注视着天空,等待飞到它身边的小飞虫。
调皮的小飞虫悄悄地向田里飞去,尽管它这样机灵,还是难以逃脱小燕子锐利的眼睛。燕子蹬开电线,用它那尖尖的嘴巴一下子叼起了小飞虫,往远处飞走了。只有电线还在摇晃,微风还在吹动。
我喜欢燕子。因为它不仅是春天的使者,还是人类的好朋友。它从南方飞回来,向人们宣告春天的到来;它帮助人们为庄稼捉害虫,确保秋天的丰收。我们要赶紧行动起来保护燕子,共同创造一个美好的大家园。
黑色的羽毛中含有乳白色的羽毛,嘴角和爪子呈通红色,尾巴像剪刀一样,如出鞘的利剑一样,把空气切开一个缝隙在天空飞扬——燕子。
燕子你来了,带来了万物萌发的`季节——春天。花儿也跟着起哄,挥舞着花瓣,像拉拉队一样为燕子鼓舞着,燕子也对花儿回应着招招手,花儿笑了。草儿看见燕子来了,挺直了身体,案首挺胸地看着燕子,仿佛一个学生看着鲜红的五星红旗的尊敬……
燕子你停留着,你在炎热洋洋的季节——夏天。你像一名工作狂一样,每天的工作。早晨,你从温暖的家里飞出来,放下了你的孩子,出去寻找食物。你在天空翱翔,吸收着大地的生气。突然一只长而透明的翅膀,胸部倾斜,腹部细长,复眼小的昆虫——蜻蜓。燕子加快了如镰刀一样的翅膀的挥动,双眼如利剑一样地看着蜻蜓,好像刚离弦的箭似的,嘴一瞬间咬住了蜻蜓,然后又加快了速度,往家的方向去了。会到了家,燕子把蜻蜓给它的孩子吃,表现一副慈母的摸样。
燕子你准备走了,你在秋高气爽的季节——秋天。它的孩子长大了,也力气大了。在黑夜里,小燕子与燕子飞走了……
燕子消失了,在冰天雪地的季节——冬天。没有燕子的踪迹。
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