It is a popular misconception that nuclear fusion power is free of radioactivity; in fact, the deuterium- tritium reaction that nuclear scientists are currently exploring with such zeal produces both alpha particles 5 and neutrons. Another common misconception is that nuclear fusion power is a virtually unlimited source of energy because of the enormous quantity of deuterium in the sea.10 Actually, its limits are set by the amount of available lithium, which is about as plentiful as uranium in the Earths crust. Research should certainly continue on controlled nuclear fusion, but no energy program should be premised on its existence until it has proven 15 practical.
1. It can be inferred from the passage that the author believes which of the following about the current state of public awareness concerning nuclear fusion power?
The public has been deliberately misinformed about the advantages and disadvantages of nuclear fusion power.
The public is unaware of the principal advantage of nuclear fusion over nuclear fission as an energy source.
The publics awareness of the scientific facts concerning nuclear fusion power is somewhat distorted and incomplete.
The public is not interested in increasing its awareness of the advantages and disadvantages of nuclear fusion power.
The public is aware of the disadvantages of nuclear fusion power but not of its advantages.
For the following question, consider each of the choices separately and select all that apply
2. The passage provides information that would answer which of the following questions EXCEPT?
A How much incidental radiation is produced in the deuterium tritium fusion reaction?
B What is likely to be the principal source of deuterium for nuclear fusion power?
C Why are scientists exploring the deuterium-tritium fusion reaction with such zeal?
答案:1.C 2.AC
雅思阅读考试要点(1)
突破雅思阅读考试瓶颈的实用法宝(上)
十四种阅读题型做题技巧--summary
雅思阅读名师张岳无忧雅思访谈实录(下)
雅思阅读高分技巧:Matching causes and effects
剑四阅读解析之续集-快乐阅读
10月30日雅思阅读试题
雅思备考技巧--复杂句子分析(4)
雅思阅读8分秘笈
雅思考试阅读测试技巧
雅思阅读测试要点(下)
雅思阅读考试“三步曲”
7.24G 类阅读的回忆
阅读分类词汇之文化
雅思阅读常见问题答疑(英)
雅思阅读背景知识:悉尼大学的图书馆借书规则
全年A类已考阅读文章一览
解析剑四阅读
雅思阅读难句之定语从句分析(1)
雅思阅读学术类高频词汇570个(List 7)
雅思阅读备考捷径
雅思阅读练习 A5
IELTS阅读测验技巧
雅思阅读单项满分学员心得
IELTS考试技巧之阅读
IELTS学术类阅读黄金法则及解题全攻略
雅思阅读高分技巧:Sentence completion
雅思阅读试题类型和备考制胜策略
10月15日雅思阅读8分心得体会
雅思阅读答题常见的8种关系词
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |