Topic: 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，有哪些正面和负面影响?2013.7.6

开头段：介绍文章背景，人类一直想要太空旅行，直到现在，我们的技术水平才能让我们可以尝试去探索宇宙的奥秘。

The question of whether we can travel in the universe has haunted humanity for centuries, but we may now stand poised on the brink of the answer to that question as we have reached the level of technology where we can make a determined attempt to start space travel and discover the mysteries in the universe.（原文稍作修改，化用在这里）

主体段第一段：论述太空旅行的好处，大部分人对太空旅行还是很感兴趣的，愿意为此付钱。发展太空旅行同时也可以为太空探索筹集资金，对广大公众和研究本身都是有好处的。

According to latest reports, space agencies in some countries have initiated programs aiming to send tourists to space. In spite of the extraordinary high cost, many people have showed great interest and reserved seats. If space tourism can be commercialized in a large scale, it is expected to be a channel of fundraising for further space research. Currently, the space travel is mainly for the purpose of scientific and military activities, which seem to be irrelevant to the life of ordinary people. Putting space tourism into practice will stimulate the interest of the general public, accelerating the advancement of space exploration.

主体段第二段：论述反对太空旅行的原因1，由于技术的不完善，太空旅行还有很多的隐患，就算真的成为现实，因为价格高昂，普通人难以负担得起，只有有钱的人才能在太空中旅行。

Although taking a trip to outer space sounds exciting, its risks cannot be ignored. There were a few accidents happening in the history that led to the suspension of space exploration projects. Other barriers include the astronomical cost and the restrictions of technology, most of which remains unsolved. Even if the dream of space sightseeing comes true, it would be a privilege for wealthy people and beyond the affordability of ordinary people.

主体段第三段：论述反对太空旅行的原因2，让高等文明生命体找到并定位我们，会对人类的文化造成冲击，也会将自己星球的安全置于危险之中。

Additionally, groups of people do not like the idea of traveling "out there". The main concern is that if other intelligent life forms capture the signals and locate us, they may be powerful enough to invade our planet and destroy or enslave lives on the earth.（上文给出的论据，正好用在这里） According to their theory, the human race would face the culture shock, or even being exterminated if faced with a superior and much older civilization. Intelligent species are not willing to co-exist peacefully or harmoniously with other creatures whose civilization apparently lags way behind. （原文稍作修改，化用在这里）

结尾段：

To sum up, the drawbacks of space travel outweigh its benefits and it may have many risks out of our control, so basically I hold a negative view on its prospect. I think space travel is possible only when we have more knowledge about the universe and a strong technological support at the same time. The significance of space tour would be far-reaching, but it is still distant from the real life at present.