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08-B.What people Don’t know about Air

Published:2013-01-26 20:39 Click:wait for……
08-B.What people Dont know about Air The air around us is important to everyone. Without air, we could not exist. Everyone understands that. But air is necessary in many other ways - ways that are not
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08-B.What people Don’t know about Air

The air around us is important to everyone. Without air, we could not exist. Everyone understands that. But air is necessary in many other ways - ways that are not always so obvious or widely known.

For example, if we did not have air, there would be no sound. Sound travels through air. Where there is no air, there is no sound. Without air, there would be no fire. There would be no cars or trucks, since motors need air in order to work.

Without air, there would be no wind or clouds. There would be no weather, as we know it. The night time would be very cold and the days very hot. We would be forced to seek shelter from the sun, as there would be no atmosphere to protect us from the sun's deadly rays.

The atmosphere is all the air surrounding the earth. Atmospheric pressure is the weight of all that air against the surface of the earth. If we did not have atmospheric pressure, we could not have automobile tires. The tires would burst if they did not have the pressure of the atmosphere against their surfaces.

Large and powerful, the atmosphere consists of an ocean of gases hundreds of miles high. It presses down on out bodies with a force of more than fourteen pounds per square inch. The narrow column of air which rests upon our shoulders weighs almost 2,000 pounds. But our bodies are built in such a way that this weight does not crush us.

In this huge ocean of air there is more energy than in all the coal, oil, and gas we have on earth. Electrical energy is collected in the atmosphere as water is collected and stored in a dam. The existence of electricity in the air has been known for centuries. Men have gazed in wonder at the bright patterns of lightning in storm clouds. But a thorough study of electricity in the atmosphere was not possible until the development of radio and radar.

One scientist, Dr. Sydney Chapman, has tried to explain the electric field which surrounds the earth. He believes that the great storms on the sun create large amounts of electric energy. This energy is contained in a very light gas called hydrogen. The earth pulls the gas toward it, and a ring is formed around the earth several thousand feet above its surface. the great space ring is a powerful current of electrical energy. Sometimes the ring comes down and curves into the lower atmosphere, causing strange electrical effects.

Dr. Chapman's ideas explain many things. It has long been known that there is an electric field inside the earth. It moves in much the same manner as the electric energy contained in the atmosphere. Scientists now believe that the electric energy in the atmosphere causes the electric energy inside the earth to flow.

If we can learn to control the energy in the atmosphere, we will have an unending supply of energy. Many scientists are trying to learn how to control it. In the meantime, even those of us who are not scientists have begun to pay attention to air. We realize that air does not contain the same elements that it contained years ago. Automobiles, airplanes, factories, and atomic explosions have added dust and waste gases to the atmosphere. It is time to learn how to protect our atmosphere, the roof over the world of man.

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obvious['3bvi4s]a.显然的,明显的
widely['waidli]ad.1.广泛地,普遍地;2.广博地;3.大大地
shelter['5elt4]n.1.掩蔽,保护;2.掩蔽处,躲避处;vt.掩蔽,庇护
atmosphere['1tm4sfi4]n.1.大气,大气圈,大气层;2.(心理上的)周围情况,环境,气氛
deadly['dedli]a.致死的,致命的
ray[rei]n.光线,射线
atmospheric[`1tm4s'ferik]a.1.大气的,空气的;2.大气层的;大气所引起的
automobile['3:t4m4bi:l]n.汽车
tire['tai4]n.轮胎
gas[g1s]1.气体;2.煤气;3.汽油
per[p4:]prep.每,每一
column['k3l4m]n.1.柱,圆柱;2.栏,专栏(文章)
electrical[i'lektrik4l]a.电的,电气的
existence[ig'zist4ns]n.1.存在;2.生存,生活
gaze[geiz]vi./n.凝视,注视
lightning['laitni6]n.闪电
thorough['78r4]a./ad.1.彻底的,完全的;2.仔细周到的,精心的
radar['reid2:]n.雷达
create[kri'eit]vt.1.创造;2.创作;3.引起,产生
hydrogen['haidr4d94n]n.氢
curve[k4:v]n.1.曲线,弧线;2.弯曲;vt./vi.(使)弯曲,(使)成曲线
unending[8n'endi6]a.1.永无止境的,不尽的;2.不断的,不停的
meantime['mi:ntaim]n.同时,其间
element['elim4nt]n.1.成分,要素;2.元素
atomic[4't3mik]a.原子能的;原子的
explosion[iks'pl4u94n]n.爆炸,爆发
in order to为了
protect...from防御(危险;敌人等)
rest upon依赖,依靠
in the meantime在此期间,(与此)同时
pay attention to注意


 
Unit 8  Text B What people Don't Know about Air
搭配:
1. Be important to sb.  对某人来说很重要/形容词词组
2. In order to do sth.  为了做某事/表示目的的动词不定式短语
3. As we know it  正如我们所知道的那样/状语
4. Be forced to do sth.  被迫做某事,不得不做某事/动词词组
5. Seek shelter from   远离,躲避/动词词组
6. Protect sb. from sth./doing sth.  保护某人不受/动词词组
7. Rest upon  依赖,落在什么上/动词词组
8. Gaze at sth./sb.  盯着某人或某物看/动词词组
9. In wonder  惊讶地/副词词组
10. In the meantime  与此同时/副词短语
11. Pay attention to sth./doing sth.  注意某事/动词词组
12. Add sth. to sth.  添加/动词词组
语言点:
1. 虚拟语气:
a. Without air, we could not exist.
b. Without air, there would be no fire.
c. Without air, there would be no wind or clouds.
结论:介词without+名词或代词,主语+could/would +动词原型。表示对现在进行虚拟。
d. If we did not have air, there would be no sound.
e. If we did not have atmospheric pressure, we could not have automobile tires.
f. The tires would burst if they did not have the pressure of the atmosphere against their surfaces.
结论:从句用动词的过去式,主句用could/would+动词原型。表示对现在进行虚拟。
2. 时态题:Sound travels through air. 用现在时的原因表客观事实。
3. 翻译:Where there is no air, there is no sound. 没有空气的地方就没有声音。
4. Deadly(adj.)致命的,e.g. deadly rays  致命的射线
5. But our bodies are built in such a way that this weight does not crush us.
6. 翻译:Electrical energy is collected in the atmosphere as water is collected and stored in a dam. 电能被储藏在大气层里就宛若水被汇集并储藏在大坝里一样。
7. But a thorough study of electricity in the atmosphere was not possible until the development of radio and radar. Not…until…直到什么时候…才
8. Large amounts of +不可数名词,表示大量的
9. Unending  adj. 无穷无尽的 (Editor:admin)
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