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公共英語三級閱讀每日一練
在平平淡淡的日常中，我們很多時候需要適量地做些閱讀題，就有可能接觸到閱讀答案，借助閱讀答案我們可以檢查自己的得與失，分析原因及時總結。還在為找閱讀答案而苦惱嗎？下面是小編為大家收集的公共英語三級閱讀每日一練，僅供參考，大家一起來看看吧。
公共英語三級閱讀每日一練 1
The Greenhouse effect and Global warming
The heart-trapping capacity of the atmosphere is popularly known as the “greenhouse effect”. Despite public controversy surrounding global warming, the natural greenhouse effect has been long established as fact in the scientific community.
Indeed, carbon dioxide, and other gases, the earth’s natural climate would be about 33℃ cooler than it is. Life would have evolved quite differently in such a climate.
Most scientists believe that the rapid expansion of agriculture and industrial activities over the last several hundred years have generated significant increases in carbon dioxide and methane in the atmosphere. However, experts disagree about whether such changers have caused the increase of approximately 0.5℃ in the earth’s surface temperature that has been documented over the past century. Many scientists cite the fact that 1997 was the warmest year on record, following a decade in which 9 of the 11 hottest years of this century were reported, as strong, but circumstantial, evidence that human activities have altered the earth’s climate. Other experts, however, believe this temperature trend is a natural variation.
Also disputed is whether projectedworld population growth to more than 10 billion people by the year 2100 will result in a doubling or tripling of atmospheric concentrations of carbon dioxide. If such a buildup occurs, as many scientists predict, global surface temperatures could increase by anywhere from about one Celsius degree to about 4 Celsius degrees during the next century. The higher half of range involves temperature changes outside of those experienced by human civilizations since the end of the last ice age some 10,000 years ago. During the last ice age, average global temperatures were only about 5 Celsius degrees cooler than the present period.
A temperature increase of several degrees Celsius could result in a sea level rise ranging from about 10 cm to about 1 m. A sea level rise of about 0.5 m would be noticeable primarily in the most vulnerable, low-lying islands and coastal areas. Larger sea level rises would result in extensive flooding of lowland beaches, wetlands, and coastal settlements. Moreover, a higher sea level base would increases the risk of catastrophic storm surges in coastal areas, since flooding would likely extend island well beyond historic levels.
Warmer temperature could also intensify droughts in some regions, destabilize ecosystems, and cause the decline or extinction of some species. Since carbon dioxide enhances photosynthesis, some scientists have calculated that higher concentrations in the atmostphere would increase the productivity of crops and forests. But others have point out that carbon dioxide increase and a warming climate could encourage the spread of destructive pests, including weeds and disease-carrying insects.
參考譯文：
大氣儲存熱量的能力被普遍看作是“溫室效應”。盡管公眾對于全球氣候變暖這一問題存在爭議，但是在科學界，自然的溫室效應問題很久前就被看作是事實了。確實，如果不是因為云層、水蒸氣、二氧化碳以及其他氣體對熱量的儲存，地球的自然溫度應該比現在低33度，生命在那種氣候條件下的進化將會大不一樣。
大多數科學家相信，在過去幾百年里農業和工業的迅速發展使得大氣中二氧化碳和甲烷的含量迅速增加。然而，對于這些改變是否是造成地球表面溫度比上個世紀增加了大約0.5攝氏度的原因，專家們持不同意見。許多科學家引述了這樣一個事實：1997年是有氣象記錄以來最熱的一年，之前的十年里有九年排在本世紀溫度最高的`前11名里，這充分且有力地證明了人類活動已經改變了地球的氣候。但是另外一些科學家卻認為這種溫度變化趁勢是自然變化。
另一個爭議是關于世界計劃人口到2100年突破 100億是否會使大氣中二氧化碳含量增加一倍到兩倍?許多科學家預測說如果這種情況真的發生的話，下個世紀世界各地的氣溫都將升高，升高程度從一度到四度不等。這個溫度變化范圍中最大的部分比從上個冰河時代末期到現在的10000年間人類經歷的溫度變化還要大。在上一個冰河時期，全球平均氣溫只比現在低5 攝氏度。
溫度升高幾度會造成海平面升高10厘米到1米不等。海平面上升0.5米對于處在低地的島嶼和沿海地區來說就相當危險了。海平面再升高一些就會給低地的海灘、濕地、和沿海居民帶來特大洪災。而且，海平面升高就會增加沿海地區發生災難性暴風雨的可能性，因為洪水可能會以前所末有的強度登陸。
溫度升高還會加劇一些地方的干旱，破壞生態平衡，造成一些物種數量的減少甚至滅絕。由于二氧化碳能促進光合作用，所以一些科學家估計大氣中二氧化碳含量的增加會提高莊稼的產量并且促進森林生長。但是另外一些科學家則指出二氧化碳的增加和氣候變暖會使得具有破壞性的害蟲、雜草以及攜帶疾病的昆蟲大規模擴散。
公共英語三級閱讀每日一練 2
Martin Luther King Jr.
By the time the Montgomery Improvement Association chose the 26-year-old Martin Luther King Jr. as its leader, the hours-old bus boyott by the black citizens of Montgomery, Alabama, was already an overwhelming success. King would later write that his unanticipated call to leadership "happened so quickly that I did not have time to think in through." "It is probable that if I had, I would have declined the nomination."
Although press reports at the time focused on his inspiring oratory, King was actually a reluctant leader of a movement initiated by others.(The boyott began on Dec. 5 1955.) His subsequent writings and private correspondence reveal man whose inner doubts sharply contrast with his public persona. In the early days of his involvement, King was troubled by telephone threats, discord within the black community and Montgomerys "get tough" policy, to which king attributed his jailing on a minor traffic violation. One night, as he considered ways to "move out of the picture without appearing a coward," he began to pray aloud and, at that moment, "experienced the presence of the God as I had never experienced Him before."
He would later admit that when the boyott began, he was not yet firmly committed to Gandhian principles. Although he had been exposed to those teachings in college, he had remained skeptical. "I thought the only way we could solve our problem of segregation was an armed revolt," he recalled. "I felt that the Christian ethic of love was confined to individual relationships."
Only after his home was bombed in late January did king reconsider his views on violence. (At the time, he was seeking a gun permit and was protected by armed bodyguards.) Competing with each other to influence King were two ardent pacifists: Bayard Rustin, a black activist with the War Resisters League, and the Rev. Glenn E. Smiley, a white staff member of the Fellowship of Reconciliation. Rustin was shocked to discover a gun in Kings house, while Smiley informed fellow pacifists that Kings home was "an arsenal."
1. What did King think of his nomination as leader of the Montgomery Boyott?
A) He hadnt expected it.
B) He had to think about it carefully.
C) He would refuse to accept it.
D) He was prepared to accept it.
2. Why was King unwilling to lead the movement at first?
A) Because he doubted if the boyott would be successful.
B) Because he was troubled with a traffic accident at that time.
C) Because he thought he was too young to be a leader.
D) Because he himself didnt start the boyott.
3. Which of the following is Not mentioned as something that happened at the beginning of the black peoples movement?
A) King was put into prison.
B) Black people disagreed with each other.
C) Kings armed revolt proposal was turned down.
D) Black people found it hard to accept the policy pursued in Montgomery.
4. Which of the following was the immediate cause that made King change his view on violence?
A) The education he received in college.
B) The attack of his home.
C) The influence of two active non-violence advocates.
D) The verdict of the Supreme Court.
5. In Paragraph 4, the last sentence "Kings home was an arsenal" means
A) Kings home was a place where people got together.
B) Kings home was a place where people tested bombs.
C) Kings home was a place where weapons were stored.
D) Kings home was a place where bombs exploded.
正確答案：
ADCBC
公共英語三級閱讀每日一練 3
The way people hold to the belief that a fun filled, pain free life equals happiness actually reduces their chances of ever attaining real happiness. If fun and pleasure are equal to happiness then pain must be equal to unhappiness. But in fact, the opposite is true: more often than not things that lead to happiness involve some pain.
As a result, many people avoid the very attempts that are the source of true happiness. They fear the pain inevitably brought by such things as marriage, raising children, professional achievement, religious commitment, self-improvement.
Ask a bachelor why he resists marriage even though he finds dating to be less and less satisfying. If he is honest he will tell you that he is afraid of making a commitment. For commitment is in fact quite painful. The single life is filled with fun, adventure, excitement. Marriage has such moments, but they are not its most distinguishing features.
Couples with infant children are lucky to get a whole nights sleep or a three day vacation. I dont know any parent who would choose the fun to describe raising children. But couples who decide not to have children never know the joys of watching a child grow up or of playing with a grandchild.
Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating realizations. It liberates time: now we can devote more hours to activities that can genuinely increase our happiness. It liberates money: buying that new car or those fancy clothes that will do nothing to increase our happiness now seems pointless. And it liberates us from envy: we now understand that all those who are always having so much fun actually may not be happy at all.
16.According to the author, a bachelor resists marriage chiefly because ______.
A. he is reluctant to take on family responsibilities
B. he believes that life will be more cheerful if he remains single
C. he finds more fun in dating than in marriage
D. he fears it will put an end to all his fun adventure and excitement
[答案]A
【精析】根據文中第三段第二句If he is honest he will tell you that he is afraid of making a commitment. For commitment is in fact quite painful.可知單身漢不愿意結婚的主要原因是他不愿承擔婚姻的.責任，故A正確。
17.Raising children, in the authors opinion, is ______.
A. a moral duty
B. a thankless job
C. a rewarding task
D. a source of inevitable pain
[答案]C
【精析】根據文中第四段But couples who decide not to have children never know the joys of watching a child grow up or of playing with a grandchild.可推測出作者對撫養孩子這件事是持贊賞的態度的，
18.From the last paragraph, we learn that envy sometimes stems from ______.
A. hatred
B. misunderstanding
C. prejudice
D. ignorance
[答案]B
【精析】根據文中最后一段And it liberates us from envy: we now understand that all those who are always having so much fun actually may not be happy at all.可知整天很開心的人不一定幸福，我們認為他們幸福只是我們自己的誤解，所以我們會忌妒，就是源于誤解。故選B。
19.To understand what true happiness is one must ______.
A. have as much fun as possible during ones lifetime
B. make every effort to liberate oneself from pain
C. put up with pain under all circumstances
D. be able to distinguish happiness from fun
[答案]D
【精析】根據文中最后一段Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating realizations.可知理解和接受真正的幸福與開心無關，明白了這一點是最具有解放意識的，所以區別開幸福與開心才能理解什么是真正的幸福，故選D。
20.What is the author trying to tell us?
A. Happiness often goes hand in hand with pain.
B. One must know how to attain happiness.
C. It is important to make commitments.
D. It is pain that leads to happiness.
[答案]A
【精析】根據文中第一段more often than not things that lead to happiness involve som pain。可知幸福總是與痛苦相伴的，故選A。
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