沉睡与长寿的生命
根据1995年11月13日美国植物学报的报导,加州大学植物 生理学家沈珍报告说,他们已将一枚来自中国大陆的,一千二百八十八年前莲花种子培育出新芽。科学家冀望自这 枚沉睡了千年之久的莲花种子中,探寻青春不老的秘诀。英国大英博物馆於三十多年前发生了一件奇事,该馆工作 人员在搬运时,无意中把清水 到一对昆虫蛆的标本上,两只虫蛆竟慢慢蠕动起来,居然又活了起来!而这对标本 是 123年前在非洲采回制成的。生命不但能在各种恶劣的环境中保持,而且还能突破时空的限制,在长久的年代中 保持下来,真令人难以置信。而类似的发现已相当的多,如富兰克林曾亲眼看到工人从一百万年前形成的石灰岩层 中,开采出四只青蛙,而且还能活动。美国新墨西哥州的一个采石场,工人也在一个二百万年前形成的一个密封石 洞中,发现一只活青蛙。英国的考古队在埃及打开密封的金字塔陵墓时,赫然发现一只活猫。数年前广东梅县重修 观澜亭,发现石柱下竟然压着一只乌龟,石柱移开乌龟就慢慢爬了起来,据州志记载,这只乌龟被压了二百四十多 年了。另一个更不可思议的事,据说中国还有发现「万年龟」,经由其龟壳的碳十四鉴定,证实它已活了上万年。 这些生物的生命保存方法,究竟有何秘诀?
.冷冻生命
1957年苏联在西伯利亚冻土层发现二千多年前的活蚯蚓十 八条。北爱尔兰地区有一种蛇,冬天被冻成冰棍,老人捡来做手杖,妇女把它们做门帘挡风雪,当春天来临,冰消 雪融,它们苏醒后就溜的无影无踪了。我们对这些纵贯古今的生命保持方法,还没有寻求到解答,但藉由科学的逐 渐发展,人类已能利用冷冻技术,把单细胞的受精卵做半永久性的保存。要保存多细胞的复合组织,可就困难多了 ,只能维持三到四个星期。若要把整个身体均匀冷冻,毫发无伤地长期保存,目前仍然做不到。虽然如此,已有许 多人为追求生命的延续,而加入美国亚尔柯生命延长基金 会,该会把已经死亡的会员体冷冻保存起来,寄望未来 较进步的医学使其复活。在电影里我们也常见在太空中旅 行的太空人,需要藉由身体的冷藏来消磨漫长的太空旅程及节省食物。这虽然是科幻情节,但随着科技的发展,也 许将来真的就是如此!
生命体的形态
在已知的物理世界里,我们都知道物质的形体,可分为气 体、液体、固体三态,以及由它们所组成的聚合体。而在我们所知的地球生物,其组成是以液体与固体的混合为主 。人体就是以七成的水及三成的固体所构成。地球上是不是亦有以气体为主,或是纯固体的生命形态?物质三态的 差异,起因於原子、分子间相互作用的强弱,而有所分别。气体与液体的原子、分子相互作用力相差一百万倍,液 体、固体间则相差一百至一百万倍。以气体为主体的生命,由於分子活动快速,要维持构造和生命机能较为困难, 理论上需要较大的形体,形状可能像台风。由於气体生命的身体非常脆弱,它需要一个宁静的成长环境。固体生命 有可能成结晶成长,且行动迟缓,为躲避其它生命的竞争,或许地球底部深处也有固体生命默默的活着。以地球多 水的环境,自然生命体亦是以液体与固体的聚合体为主。人类的生命观只限於地球生命,至今连地球生命的本质仍 未能掌握,又如何深入了解形成原理与地球生物不同的生命?那麽放眼宇宙,无数个不同的星球,是否也各自存在 不同形态为主的生命?是否也有别於地球以碳水化合物机体之外的生命机体?以金属或其它物质组成?生命体有没 有可能超越物质三态,而存在光态或隐态当中?若有,则可能对灵异现象或神出鬼殁的幽浮,将有一番突破与合理 解释。这是值得让我们深思与研究的问题。
“追星”如今已成为一种时尚,成为年轻人的标志。其实“追星”并不是一种好现象,但如果适当的,选择好的“星”做为自己学习的榜样,这也不失为一件好事。但许多人却以夸张、疯狂的态度“追星”,不仅没有好处而且对社会也无益。
那些“明星”和我们一样,也是人,不是神。有些人疯狂到为了得到他们的东西,不惜一切代价。记得电视上报道过,有四个女生太喜欢自己的偶像,但却怕对他不够忠诚、热心,并决定要将那偶像永远留在她们“心中”,便活生生地吞掉了那偶像的照片。那样有什么用?这样就在“心中”了吗?到头来还不是一个个的被推进手术室!那照片有用吗?这样疯狂地崇拜有意义吗?有的甚至为了偶像而要轻生自己。这种做法实在太恐怖了,扰乱了社会秩序,增加了家人的负担。这样子追星到头来还不是一场空。
正因为那些Fans的太过热情,使那些原本和我们一样是工作者的“星”渐渐忘却了自己真正的价值。但有一件事情让我难以忘却。
一次,一个电影明星来到汽车检修站,一位女工接待了他,可那位女工却对他的到来没有任何惊讶和兴奋,这便引起了这位影星的注意,其实那位女工很喜欢他,也爱看他的电影但她却没有像别人那样疯狂、热情。她说:“您有您的成就,我有我的工作,您来修车就是我的顾客,我会热情的招待您,如果您不是明星了,再来修车,我还是一样热情的`招待您。”最后她说了一句发人深省的话:“人与人之间不应该是这样吗?”是啊!这就是明星的价值,真正的价值。他们就和我们一样,为什么我们要放弃掉自己所有的,去盲目的崇拜呢?
可是既然社会上有了“追星”这一现象,所以我们也可以适当的“追星”,选择品德好,有益于我们自己的人作为自己的榜样。其实“追星”有好有坏,但好与坏就在于我们自己的选择了。
像“追星”这一现象的流行,我们需要独立思考,了解它们所具有的意义所包含的价值,避免盲目效仿追随。
【习作题目】
Students Grading of Their Teachers
1.学生给老师打分已很普遍;
2.人们对其持不同态度(肯定或否定的态度);
3.你的看法。
【习作解读】
显然,此任务是写一篇议论文,主题为对学生给老师打分的现象进行议论,开放性较大。学生应根据实际情况,从多个方面阐述其原因并表达自己对这种现象的观点和态度。该话题更加贴近学生的实际生活,但有一定的语言难度,也有一定的思想深度。通过此文的写作,也从侧面提示了学生在注重写作基础训练的前提下,也应该注重培养积极思考、灵活运用、自由发挥等能力。
此次的写作任务出题相当巧妙,写作内容涉及的词汇和句型都属于新课程标准范围。题目在考查学生写作能力的同时,也在考查学生的分析判断能力及高度概括能力。富有想象力的学生写出的文章可能生动而富有灵性。此题目能引发学生对平日习以为常的行为进行反思,学会换位思考,这对中学生的性格和品德培养非常重要。
【习作展示】
Students Grading of Their Teachers
Nowadays, a lot of schools ask their students to contribute to grading their teachers. As a teacher, it is their responsibility to satisfy their students in all aspects. Meanwhile, it is admirable that school teachers prefer to expose themselves to their students.
If the system of grading of teachers by students is introduced, it will benefit students, teachers and the administration of the school for a number of reasons. For one thing, the system will give teachers and the administration of the school an insight into the minds of the students and show whether the teachers are successful in getting their lessons understood by the students; for another, it will also encourage the good teachers to continue their efforts and motivate themselves. What is more, it will expose those who are not doing enough and will lead them to correct their teaching methods as well as their attitude towards students. Thus the quality of teaching will certainly improve.
In a word, it is a promising concept and will bring surprisingly good results if applied with the right conditions.
【习作点评】
作者观点明确,赞成学生给老师打分。作为老师,就要做一个让学生满意的老师。这样,不仅对学生、学校有利,而且对老师本人也有利。这样,老师就会从另一个角度重新审视自己,看自己是否是一个成功的老师。如果得到学生的认可,这将是对自己的一次鼓励,为继续前行增添动力。如果学生的认可度不高,老师就应进行反思,调控教学方法和教学态度。这样,教学质量肯定会提高。作
者用简洁、明快的语言以及自己的经历列举了充分的论据,内容充实,贴近生活。For one thing, for another, what is more, in a word等过渡词的使用,是短文结构清晰,层次分明。最后,最值得一提的是,文中多次正确运用的高级词汇和复杂句式,给文章增添了不少文采。综上所述,这是一篇不可多得的佳作,值得向大家推荐。
二、写作模板
此模板适用于社会现象类议论文。参考模式如下:
Nowadays, there exists an increasingly serious social/economic/environmental There are a couple of reasons behind this problem/phenomenon. For one ;Based on the above discussions, I can easily forecast that more and more people
Nowadays, there exists a common phenomenon—with the development of the Internet, more and more people tend to send electronic cards instead of paper ones to their friends and relatives when an important holiday comes.
There are a couple of reasons behind this phenomenon. For one thing, compared with the traditional cards, electronic cards are more lively and interesting. They can give not only pictures but also sound and animation. For another, there are many websites online which offer varieties of cards for you to choose from. What is more, with the popularity of the electronic cards, less paper is used in making paper cards, which does good to our environment.
Based on the above discussions, I can easily forecast that sending greetings by using electronic cards will be accepted by more and more people, not only the young ones.
三、写作指导
写作思路是先列出一个具体的社会问题或者现象,然后分析产生的原因和产生的影响,最后提出解决问题的办法,或者得出结论,或者提出个人看法,或者预测前景。
论点、论据、论证是议论文的三要素。论点是作者对所议论问题所持有的见解和主张,论据是用来证明论点的事实和道理的根据;论证是用论据来证明论点的方法和过程。一般来说,议论文每段都有主题句来确定论点。论证的方法很多,但最常用的是因果分析法。即:分析事实与论点的因果关系,指出取得结果的原因是所要证明的论点,从而达到论证的目的。
在近几年的高考中,议论文的比重占得越来越多,议论文的.出题形式可以多种多样,有看图写作、图表、表格、书信等各种类型,但文体实际是议论文,而有时是夹叙的议论文。议论文的写作要点是:
1. 观点鲜明,文章一定有一个明确的中心论点。
2. 层次分明,一个中心论点通常有几个分论点支持,不同层次之间要分明,过渡清晰自然。
3. 最后一段一般要总结全文,得出一个符合逻辑的结论,突出中心思想。
4. 一般采用一般现在时。
5. 语言简洁有力,一般不采用口语。
四、巩固练习
1.【练习题目】
2010年上海世界博览会期间,上万的青年志愿者参加志愿工作,请你谈谈对此现象的看法。
【参考范文】
During the period of holding the 2010 World Expo in Shanghai, tens of thousands of young citizens are participating in volunteer work, hoping to devote themselves to the grand occasion. As far as I am concerned, everyone ought to enter for it. Here are the reasons I want to mention.
It can be argued that the advantages of doing unpaid volunteer work are enormous, because volunteer work is actually a two-way street. First of all, volunteer work should always benefit people who need help. Those who need help will feel happier due to our immediate help. On the other hand, as far as the young people ourselves are concerned, we have more opportunities to develop the sense of responsibility, independence as well as interpersonal skills in the process of helping others.
Through this kind of work, we become confident and mature. In addition, we can make many friends and increase our chances of getting the jobs of our dreams. Furthermore, volunteer work plays an active role in building up a harmonious society.
In a word, it is of great value for the young adults to offer volunteer work. The youth volunteers do make a difference by the voluntary work! Why not join them and do something for our country?
2.【练习题目】
某些中学生为了显示自己成熟或表明自己醋而吸烟。请写一篇120词左右的短文,列举吸烟的危害,并提出建议。
【参考范文】
I am sorry to know that more and more middle school students begin to smoke. I think it is wrong to believe that smoking is cool and even think that smoking makes you appear to be mature. In fact, smoking is not cool but very dangerous.
First, smoking can do much damage to health. Scientific researches show that smoking can lead to heart diseases, cancers and other problems. It is reported that about 5 million people die of diseases related to smoking each year all over the world.
Second, it is a waste of money to smoke cigarettes. Smoking can cost a great deal of money. Once you are addicted to it, it is difficult to give it up.
What’s more, smoking can cause fires easily, which may do great damage to your life and your surroundings.
So give up smoking at once! Only in this way can you keep healthy forever.
3. 【练习题目】近年来,越来越多的中学生出国学习,出现了所谓的中学生“出国热”。请根据以下提供的信息,谈谈自己的看法。
1)良好的语言环境,更利于语言学习。
2)拓宽视野,学习国外先进的科学技术。
3)传播各民族间的不同文化。
参考词汇:媒介,中间人:mediator
【参考范文】
In recent years, studying abroad has been popular. Tens of thousands of Chinese middle school students have gone to foreign countries to study.Many people are trying their best to apply to go abroad.
There are a number of reasons for attending schools abroad.First, students who are studying abroad can act as mediators between people of different cultures. They can communicate with each other directly and learn about different cultures. Second, they can learn much more advanced knowledge of science and technology from foreign countries and experience different education methods.Third, they live in foreign countries and take classes given by foreign teachers. As a result, they can learn foreign languages much more quickly.
Therefore, it is advisable to attend schools abroad.
4.【练习题目】随着经济和社会的发展,道路上的私人小汽车越来越多。请根据自己的观察和理解,谈谈自己的观点。
【参考范文】
With the fantastic development both in economy and in society in China, the number of people who own private cars is on the rise. Some people have bought cars of their own, and others are planning to buy cars. But I strongly object to the increase in developing private cars.
I hold that automobiles will give rise to a series of problems. In the first place, as more and more cars are produced and run on the road, a large volume of poisonous gas will be given off, polluting the atmosphere and causing actual harm to the health of people. Next, private cars contribute to traffic jams so greatly that the advantages gained in comfort and freedom are often cancelled out by the frustration caused by traffic jams. The last problem is the increasing number of car accidents that have killed and will kill a lot of people in a friction of a second.
In a word, although automobiles have been playing a vital part in the daily activities of our society, they also bring us numerous troubles such as more serious environmental pollution, more traffic accidents and more energy consumption. They drink up huge amounts of fuel and throw out huge amounts of pollutants. Jams waste our precious time. Therefore, I am against developing private cars.
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