来自：查字典高考网 2014-12-25
Space Research
Pros：
1. The oldest and purest of the arguments for space exploration is the advancement of science and technology.
2. We will go into space， not to bring back things which make us richer or more comfortable here on Earth. We will go there to live and make it our home.
3. The exploration to the universe is a high ideal space truly is the final frontier .
4. The instinct to explore is fundamentally human; already some of our most amazing achievements have taken place in space.
5. No one can deny the sense of wonder.
6. The exploitation of space has directly changed our world. Satellites orbiting the Earth allow us to communicate instantaneously with people on different continents， and to broadcast to people all over the world.
7. Weather satellites save lives by giving advance warning of adverse conditions， and together with other scientific instruments in orbit they have helped us understand our own world better.
8. Space exploration is an investment in the future. Our world is rapidly running out of resources. Overpopulation could become a serious worldwide threat.
9. Space exploration open us new world and adds to our knowledge， enabling human being to know more about the universe as well as about the earth.
10. Space exploration helps to acquire new resources to mitigate the energy crisis There may be some new kinds of natural resource in other planets.
11. Space exploration may find new living places for human being to solve the problem of overpopulation. There is possibility that one day mankind may emigrate to other planets.
12. Space exploration is necessary for future. If we want to progress in the world then we should continue space exploration.
Pros and Cons of Tourism
1. It is regarded as a pillar of key local economic development
2. The booming tourist industry has created more job openings. Many people have said good-bye to poverty through involvement in tourist businesses.
3. The tourist industry has played a positive role in meeting the cultural needs of the public， carrying forward national culture and achieving the sustainable development of resources.
4. Tourism helps to better introduce the country to foreigners and showcase the brilliant history and culture to the outside world.
5. Tourism helps to improve the investment environment so as to attract more foreign investors.
6. Tourists can take pleasure in the magnificent natural landscape， appreciate the superior workmanship of ancient artists and enjoy a variety of local delicacies Many tourist attractions offer a wealth of historical relics， fascinating scenery and interesting local culture.
7. Tourism helps to promote the catering trade， transportation service and commerce .
8. Tourism is the worlds largest and faster growing industry. According to recent statistics， tourism provides 10 percent of the worlds income and employs almost one-tenth of worlds workforce. By the year 2010， these numbers will double. All considered， tourisms actual and potential economic impact is astounding.
9. Tourism encourages the preservation of identify， pride and value in our living conditions and the cultural legacy of generations in danger of extinction.
10. Tourism contributes to the revival of customs and traditions.
11. Tourism brings new money into an area and generates jobs， income and tax revenues.
Cons：
1. Contact with and assimilation of other cultures will reduce the uniqueness of ones own culture and make the world less colorful than before.
2. Undermine local traditions and ways of life.
3. Tourism may cause serious environmental pollution.
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