雅思写作范文：太空旅行带来的正负面影响

 　　2013年7月6日雅思考试

　　Space travel has been possible for some time and some people think the space tourism could be developed in the future. To what extent do you think it's a positive or negative development?

　　太空旅行即将成为可能，人类探索宇宙秘密的同时又将受到哪些正面和负面影响?

　　相关题目：Some people think space tourism can help to develop countries' economy. What's your opinion? What are the effects?

　　提纲：Positive：Economic Broaden horizon Private experiments

　　Negative：Body+psychology environment

　　范文：

　　American, Russia and my country China have successfully sent their astronauts to the outer space. Inspired by space technology, some wealthy ambitious explorers have extended their sight beyond the earth. While the idea of commercial space flight is being conceived by some pioneer organizations, some concerns are raised in terms of the adverse¹ effects on human body and the environment. (非谓语，平行句型)

　　Surely orbit flight is an exciting and worthwhile experience. The breath taking view of our blue Earth from the space, the non-twinkling starts hanging on the dark endless outer space background and walking in the space of microgravity definitely would expand their horizon and impress the participants for life. The most important drive behind this enthusiasm for space tourism should be the potential billion dollar business. Such a trip can cost 20 million dollars for each person now, but the price is expected to decline gradually with the advance of aviation technology, hoping to attract wider spectrum² of class groups. Therefore prosperity in space tourism is being predicted in future decades by some optimists³. (转折句，非谓语，现在进行时的被动句)

　　However, cautious optimism is another attitude towards this prospect⁵. Scientists are concerned about the impact on the environment of launching a rocket, which emits much larger amount of carbon than any other transportation on the earth, accelerating global warming. In addition, safety and health issues have to be considered. It has obviously been noticed that astronauts living long term in weightlessness are confronted with physical deterioration⁶ including loss of bone and muscle mass. Constrained⁸ in a small cabin tends to suffer from psychological changes such as depression, anxiety and insomnia⁹. However, space tour tends to be as short as a couple of hours and these effects can be minor¹⁰ and temporary. (定语从句，比较句型，非谓语，形式主语)

　　To sum up my idea, space tourism can be expected to flourish like the international tourism on the earth in the last decades. Meanwhile it is also true that there will be some negative impacts on the environment and tourists’ physical and psychological condition. As humans always do, they gain some progress at the cost of something else. (形式主语，形式状语从句)

　　词汇拓展：

　　1. Astronaut 飞行员

　　2. ambitious 有抱负的

　　3. extend their sight beyond 目光越过

　　4. adverse effects 负面影响

　　5. conceive 酝酿

　　6. raise concerns 提出顾虑

　　7. commercial space flight 商业太空飞行

　　8. orbit flight 绕地球太空飞行

　　9. optimist⁴ 乐观主义者

　　10. breath taking 令人赞叹的

　　11. microgravity 微重力

　　12. expand their horizon 拓宽视野

　　13. impress 留下印象

　　14. drive 动力

　　15. expect 期待

　　16. predict 预期

　　17. aviation 航空

　　18. wider spectrum of 广泛的

　　19. prosperity 繁荣

　　20. decade 十年

　　21. twinkling 闪烁的

　　22. cautious optimism 谨慎乐观

　　23. attitude 态度

　　24. launch a rocket 发射火箭

　　25. accelerate 加速

　　26. weightlessness 失重

　　27. deterioration 恶化

　　28. constrain⁷ 束缚

　　29. cabin 小阁子

　　30. insomnia 失眠

　　31. temporary 临时的

　　32. minor 微小

　　33. flourish 兴旺

1 adverse   

adj.不利的；有害的；敌对的，不友好的

参考例句：

• He is adverse to going abroad.他反对出国。
• The improper use of medicine could lead to severe adverse reactions.用药不当会产生严重的不良反应。

2 spectrum   

n.谱，光谱，频谱；范围，幅度，系列

参考例句：

• This is a kind of atomic spectrum.这是一种原子光谱。
• We have known much of the constitution of the solar spectrum.关于太阳光谱的构成，我们已了解不少。

3 optimists   

n.乐观主义者( optimist的名词复数 )

参考例句：

• Even optimists admit the outlook to be poor. 甚至乐观的人都认为前景不好。 来自《简明英汉词典》
• Optimists reckon house prices will move up with inflation this year. 乐观人士认为今年的房价将会随通货膨胀而上涨。 来自辞典例句

4 optimist   

n.乐观的人，乐观主义者

参考例句：

• We are optimist and realist.我们是乐观主义者，又是现实主义者。
• Peter,ever the optimist,said things were bound to improve.一向乐观的皮特说，事情必定是会好转的。

5 prospect   

n.前景，前途；景色，视野

参考例句：

• This state of things holds out a cheerful prospect.事态呈现出可喜的前景。
• The prospect became more evident.前景变得更加明朗了。

6 deterioration   

n.退化；恶化；变坏

参考例句：

• Mental and physical deterioration both occur naturally with age. 随着年龄的增长，心智和体力自然衰退。
• The car's bodywork was already showing signs of deterioration. 这辆车的车身已经显示出了劣化迹象。

7 constrain   

vt.限制，约束；克制，抑制

参考例句：

• She tried to constrain herself from a cough in class.上课时她竭力忍住不咳嗽。
• The study will examine the factors which constrain local economic growth.这项研究将考查抑制当地经济发展的因素。

8 constrained   

adj.束缚的,节制的

参考例句：

• The evidence was so compelling that he felt constrained to accept it. 证据是那样的令人折服，他觉得不得不接受。
• I feel constrained to write and ask for your forgiveness. 我不得不写信请你原谅。

9 insomnia   

n.失眠，失眠症

参考例句：

• Worries and tenseness can lead to insomnia.忧虑和紧张会导致失眠。
• He is suffering from insomnia.他患失眠症。

10 minor   

adj.较小(少)的，较次要的；n.辅修学科；vi.辅修

参考例句：

• The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
• I gave him a minor share of my wealth.我把小部分财产给了他。