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
Online Shopping 网上购物-英语点津
Hangry 饥饿成怒
It's on the cards 这件事十有八九会发生
There's method to my madness 我有一个不合常理的办法
Get someone's goat 火冒三丈
White / blue-collar worker 白领,蓝领
In the blink of an eye 一眨眼之间
Apple’s headphone headache? 令人头疼的新款苹果耳机
The last/final straw 忍无可忍,使人最终崩溃的一击
Going forward 从今往后
Crash course 速成课
Close, but no cigar 几近成功
Until I'm blue in the face 任凭你磨破嘴皮
Are you addicted to your phone? 你是不是玩手机上瘾了?
To make a monkey out of me 捉弄我
You're pulling my leg! 你在愚弄我!
To lie through your teeth 睁眼说瞎话
Clean up your act 改邪归正
To turn something upside down 把……翻个底朝天
It takes two to tango 一个巴掌拍不响
Too much stuff 物质主义和简约主义
Cheap and cheerful 物美价廉
To make a mountain out of a molehill 小题大做
Knee-jerk reaction 本能反映
Burn a hole in your pocket 有钱不花难受
Bust a gut 拼了命地工作
Drama queen 小题大做的人
In good nick 品质好、没有损坏
Cyclists make Olympic history, 400-year-old shark 英国自行车运动员创英奥运历史,400岁格陵兰鲨鱼
A recipe for disaster 后患无穷
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