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昂立教育 > 托福机经 > 写作 > 托福机经2014.09.21写作

托福机经2014.09.21写作
发布时间:2014-10-22 作者: 来源于:昂立外语网站

WRITING SECTION

Integrated writing task

Topic discussed: Why plants fold their leaves at night

Notes

Reading: 

l Protection against cold weather

l Protection against infection, block out water so insects have no means of fungal infection

l Eliminate nighttime light, to track up to the regular time to produce flowers

Lecture: 反驳

l No source of internal heating, so plants suffer the same freezing damage no matter leaves are folded or not

l Rainy weather leads to humid condition. Fungus only require little water to infest

l Some plants in densely-shaded areas where no light is reaching still fold leaves. So the light theory doesn't work out

 

Glossary

infection感染

fungal 真菌的

infest滋生

 

背景知识
植物在夜间常常会闭合叶片,这样的现象在植物生理学中被称为睡眠运动,它不仅是一种有趣的自然现象,而且是个科学之谜。每逢晴朗的夜晚,人们只要细心观察,就会发现一些植物已发生了奇妙的变化。比如常见的合欢树,它的叶子由许多小羽片组合而成,在白天舒展而又平坦,一到夜幕降临,那无数小羽片就成双成对地折合关闭,好像被手碰过的含羞草。这一现象的原因可能有多种:
一是夜晚比白天冷,夜晚闭合叶子和花朵,可以避免寒露和霜冻的侵袭;二是闭合可减少水份的蒸发,有保持适当湿度的作用;三是热带植物的叶子往往在白天闭合,也是为了减少叶面水份的蒸发;四是夜晚开花的植物白天睡眠,有防止水份和体温过多散发及防止昆虫捣乱的作用;此外还有钾离子浓度改变及生物钟控制等等的解释。
总而言之,植物睡眠与人和动物睡眠一样,都是一种自我保护本领,是为了自身的更好生存和发展。

 

Independent writing task

Essay question

Do you agree or disagree with the following statement: it is often not a good thing to move to a new city or a new country because of the loss of old friends

 

Sample answer

As there are significant changes taken place in our social structure, an increasing number of people are inclined to move to a new city or a new country in pursuit of opportunities. From my opinion, it is valuable experience to start a brand-new life in a new place. Although some people may hold a negative attitude due to the possibility of losing old friends, it is actually senseless to be so pessimistic.

 

First of all, moving to a new place does not necessarily mean the loss of old friends. Thanks to modern technology, keeping in touch with a friend across the ocean is no longer beyond reach. With webcam and microphone, every facial expression and tone of speech can be delivered just as a face-to-face meeting. Using Skype, Twitter or Facebook, we still can catch up with old friends through the marvelous internet. After all, distance will not separate genuine friends.

 

Secondly, even old friends drift apart, it is still a good thing to move to a new place. Since one is no longer in his familiar environment, he must cross the boundaries to develop new friend circles, which is of great help in exercising his communication skills. A new living space will provide one with great opportunities to make new friends from diverse social background but sharing the same interest.

 

Thirdly, a new living environment also creates a new way of living. The exotic cultures and customs offer an individual great experience that couldn't possibly be available otherwise. Also, a new environment helps an individual to discover his inner strength and obtain a deeper insight. Take Thoreau, the noted writer, for instance, he once moved to Walden to concentrate and get himself working on his writing. Away from familiar environment and acquaintances, he embarked on a two-year experiment in simple living and finally published the celebrated Walden.

 

Admittedly, moving to a new place may sometimes be unpleasant, but it is a result of inability to adapt to new surroundings rather than the loss of old friends. All in all, with the help of modern technology, moving to a new place doesn’t mean compromising friendship but will bring benefits of building up an extensive social network and broadening one’s life experience instead

 

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