阅读下列短文，从每题所给的A.B.C和D项中，选出最佳选项。

　　It is over 40 years since first atomic bomb was dropped on a major city in Japan. Yet even now its effects are showing themselves and may continue to do so for years to come. Much effort and human energy have been used to try to prevent such a terrifying thing from happening again. So far there is no guarantee that it will not. Countries which already possess nuclear knowledge and resources have bombs stored away which are powerful enough to wipe out all life on earth. But this is not all. Other countries, which previously were not so advanced in technology, are gradually buying materials that can be used for making atomic devices. This nuclear energy will naturally be of great value in helping the economy of poorer nations.

　　The generation of electricity through nuclear power came directly from the original work on the atom bomb. Because of the increase in demand for energy and the possibility of decreasing supplies of oil and natural gas, the interest in electricity has increased. One of the by-products of nuclear power stations is plutonium (钸) produced from unclear fuel: plutonium is ingredient (成分) in bomb-making. It means that there are far more opportunities for the manufacture of bombs.

　　This brings the problem to a full circle again. How can something so valuable and useful be controlled so that it works for the benefit and not the destruction of man? (from www.nmet168.com)

【四川省成都市2016届高考英语阅读理解二轮提升训练（21）（含解析）】相关文章：

★ 四川省成都市2016届高考英语阅读理解二轮提升训练（16）（含解析）

★ 四川省成都市2016届高考英语阅读理解二轮提升训练（13）（含解析）

★ 常熟市2014高考英阅读理解语一轮（暑假）训练题（8）及答案

★ 浙江省湖州市2014高考英语完形填空一轮（暑假）精炼（9）含答案

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 10 A卷 Word版含解析

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习短文改错专题训练：考法2 句法错误（含解析）

★ 2017高考四川省广安市英语阅读理解一轮系列训练：28（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (35)

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（19）附答案

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（22）附答案