When we see photographs of starving children, its hard to say that we should spend billions of dollars on space exploration. But thats just what we should do. Children dont need to be starving, but we do need to explore space. Right now, we have enough money to feed every person on Earth. Children are starving because of mismanagement of resources and simple human greed. Those are problems we can solve right here on earth. That shouldnt stop our need to find out whats beyond our own solar system. We may never make contact with whatever other species there may be out there in space. Even so, there are still two very practical and positive consequences of space exploration. One is a certainty and the other is a possibility. The certainty is medical research. Yes, we can conduct research here on earth. But much of the research done in space, for example, on the effects of gravity on bone marrow, is making a difference in medicine here on Earth. When we do research in space, we also learn more about space exploration. Also, many of the inventions that were developed for space travel have been adapted to good use on Earth. The possible consequence of space exploration is finding another planet human beings can colonize. Overpopulation is a huge problem on our planet. People are living longer, more healthful lives, and thats a good thing. But it means there are fewer people dying and more people being born. Eventually well have less space, fewer resources, and major distribution problems. If we can find another planet to live on, we can relieve the problems of overpopulation on our planet. Its a tragedy that there are human beings suffering on Earth. However, if we wait until everyone has a perfect life, we will never explore spaceand that , too, would be a kind of tragedy.
实例分析雅思听力配对题
通过读题来找雅思听力的答案
雅思听力常见地名总结
如何合理利用雅思听力中的停顿时间
雅思听力旅游场景的出题点讲解
雅思听力的6个实用小贴士
雅思听力找答案的技巧介绍
雅思听力配对题的三大题型特点
提高雅思听力能力的5个方法介绍
雅思听力中的高频同义词整理
应对雅思听力难题的7个方法
雅思听力的五种经典陷阱
雅思听力高分必备的两大要素
雅思听力考试的难点分析
雅思听力:锻炼听说能力的五个窍门
影响雅思听力审题的四个坏习惯
雅思听力提高的三个备考阶段
预测雅思听力题目需要做到的两个要点
雅思听力答案书写的五个注意事项
雅思听力考试的四个要点
提高雅思听力水平的五个步骤
从三方面入手提高雅思听力成绩的方法介绍
雅思听力填空题的难点在哪?
雅思听力考试的5个特点及学习方法介绍
雅思听力单选题的两种出题形式解读
雅思听力的五个衔接技巧
雅思听力单选题的解题思路讲解
六个雅思听力高分策略分享
雅思听力审题的四大要点
雅思听力高分考生的基本特征
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |