单选题 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.

单选题 The author thinks that science and technology ______.
A. have caused the current world problems
B. have made life better for more people
C. will, if not in the past, better people's life in the future
D. can not bring a better life for most people
【正确答案】 B
【答案解析】[解析] 第二段指出，有人认为，科学与技术造成了当今世界的许多问题，对这种错误认识，科技工程人员有义务加以纠正。相反，科学与工程学大大地改善(better)了人们的生活。
单选题 According to the author, to improve the quality of environment, it is important to ______.
A. call on the public to action
B. pass related law
C. eliminate the destructive effect of science and technology
D. use better knowledge of science and technology
【正确答案】 D
【答案解析】[解析] 第三段指出，只有通过更先进的(better)知识(指科学与技术知识)及其应用，环境才能改善。
单选题 We are not satisfied because ______.
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
【正确答案】 D
【答案解析】[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。
单选题 The author believes that our current problems can be better solved by ______.
A. social, political, and economic means
B. advances in science and technology
C. effective law-making
D. both A and B
【正确答案】 D
【答案解析】[解析] 文章最后一段指出，虽然我们目前的许多问题可以通过社会、政策、经济而不是科技手段解决，但是，在净化空气和水、改善交通和医疗条件、增加福利、改善食物、保护资源等方面，还要靠科技才能实现。
单选题 The author points out that ______.
A. attention should be given to some areas of science and technology to better people's life
B. we should not expect science and technology to improve living conditions for all the people
C. social political and economical means should not interfere with the advances in science and technology
D. we should not use science and technology to achieve material goals
【正确答案】 A
【答案解析】[解析] 在总结全文的第五段作者指出，虽然解决目前的许多问题更需要社会、政治和经济手段(instrument)，但是许多方面的进一步发展还必须通过科技手段才能达到。