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  3. What are those of us who have chosen careers in science and engineering able to do about our current problems? First, we can

What are those of us who have chosen careers in science and engineering able to do about our current problems? First, we can

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问题     What are those of us who have chosen careers in science and engineering able to do about our current problems?
    First, we can help destroy the false impression that science and engineering have caused the current world trouble. On the contrary, science and engineering have made vast contributions to better living for more people.
    Second, we can identify the many areas in which science and technology, more considerably used, can be of great service in the future than in the past to improve the quality of life. While we can make many speeches, and pass many laws, the quality of our environment will be improved only through better knowledge and better application of that knowledge.
    Third, we can recognize that much of the dissatisfaction we suffer today results from our very successes of former years. We have been so greatly successful in attaining material goals that we are deeply dissatisfied that we cannot attain other goals more rapidly. We have achieved a better life for most people, but we are unhappy that we have not spread it to all people. We have reduced many sources of environmental disasters, but we are unhappy that we have not conquered all of them. It is our raised expectations rather than our failures which now cause our distress.
    Granted that many of our current problems must be cured more by social, political, and economic instruments than science and technology, yet science and technology must still be the tools to make further advances in such things as clean air, clean water, better transportation, better medical care, more adequate welfare programs, purer food, conservation resources, and many other areas.
We are not satisfied because ______.
选项 A、science and technology have created many social problems
B、science and technology have brought about many environmental disasters
C、science and technology have made us more distressed
D、we expect too much of Science and technology at present
答案D
解析 第四段指出，主要是由于我们以前(利用科学与技术)取得的成就，我们对现状不满。我们已在物质方面取得了巨大成功，但在其他方面却没有取得相应程度的发展；我们中大部分人改善了生活，但还有些人却未享受到生活的改善；我们减少了可能产生的许多环境灾难，但我们还面临着其他威胁。真正使我们感到不满的不是我们的失败，而是我们对自己的期望提高了。
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