ThehugeexplosionatKrakatauwast

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更新 2022-09-03
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The huge explosion at Krakatau was the result of two different factors. One was that the volcano had not broken out for some time and so at the very center of the volcano there was a huge plug of lava, which acted like a cork(塞子) in a bottle, stopping the pressure below from being released(释放). The second factor was that ocean water entered the very centre of the volcano as the explosions became more violent. This caused superheated steam to build up enormous pressure and this was finally released in the largest explosion of all on August 27, 1883. The sudden release of the pressure sent huge amounts of ash, rock and dust into the sky. Some of the ash rose 80km into the air and traveled around the Earth causing brightly coloured sunsets for several years.
Krakatau almost disappeared; for many years after this explosion, it remained very quiet. However, there was still activity going on under the sea and on 25 January, 1925, a small volcanic cone appeared above the surface of the water. This new volcano was named Anak Kmkatau, or Child of Krakatau. Over the following years, the size of the island grew larger, by 1959, the island was 300 metres above the surface of the sea. The volcanic activity has continued and the latest eruptions were in 1995.
There is no doubt Krakatau will continue to grow and there is also strong evidence that at some point in the future there will be another violent explosion. Krakatau is in a part of the world where the surface of the Earth is unstable and is always moving and cracking. If, in the future, another “cork” becomes fixed in the centre of the volcano, the pressure will build up. A series of a smaller explosions will allow sea-water into the centre of the volcano and once again the result will be a terribly destructive explosion.
1. The latest eruptions were in_______.
A.1925            B. 1959           C. 1995           D. 1983
2. The pressure under the volcano can not be released because _______.
the plug looks like a cork in a bottle
the volcano hasn’t broken out for some time
the center of the volcano is blocked(堵塞) by lava
the temperature of the steam is not high enough.
3. We can infer from the article that Krakatau volcano________.
A. has broken out three times               B. never dies but continues to be active
C. will kill many people again in the future    D. is always moving and growing above sea.
4. All of the following results are caused by the explosion at Krakatau EXCEPT that_____.
A. ash, rock and dust was thrown high into the air
B. other small volcanoes were soon produced.
C. the island of Krakatau was destroyed
D. people saw beautiful sunsets for some years
5. The article is mainly about________.
A. the cause of the Krakatau volcano
B. the danger of the Krakatau volcano
C. the history of the Krakatau volcano
D. the future of the Krakatau volcano

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Did you know that women’s brains are smaller than men’s? The average women’s brain weighs 10% less than men’s．Since research has shown that the bigger the brain, the cleverer the animal, men must be more intelligent（聪明的） than women．Right? Wrong．Men and women always score similarly on intelligence tests, despite the difference in brain size．Why? After years of study, researchers have concluded that it’s what’s inside that matters, not just the size of the brain．The brain consists of “grey matter” and “white matter”．While men have more of the latter, the amount of “thinking” brain is almost exactly the same in both sexes．
It has been suggested that smaller brain appears to work faster, perhaps because the two sides of the brain are better connected in women．This means that little girls tend to learn to speak earlier, and that women can understand sorts of information from different sources at the same time．When it comes to talking to the boss on the phone, cooking dinner and keeping an eye on the baby all at the same time, it’s women who come out on top every time．
There are other important differences between two sexes．As white matter is the key to spatial（空间的） tasks, men know better where things are in relation to other things．“A great footballer always knows where he is in relation to the other players, and he knows where to go,” says one researcher．That may explain one of life’s great mysteries: why men refuse to ask for directions…and women often need to!
The differences begin when fetuses（胎儿） are about nine weeks old, which can be seen in the action of children as young as one．A boy would try to climb a barrier （障碍物） before him or push it down while a girl would attract help from others．These brain differences also explain the fact that more men take up jobs that require good spatial skills, while more women speech skills．It may all go back to our ancestors（祖先）, among whom women needed speech skills to take care of their babies and men needed spatial skills to hunt, according to one research．
If all this disappoints you, it shouldn’t．“The brain changes throughout our lives according to what we do with it．” says a biologist．
56．The passage mainly tells us ________．
A．the difference between men’s and women’s brains
B．the changes in brain throughout our lives
C．that men are better at spatial tasks
D．that brain differences are related to our ancestors
57．Which of the following is true according to the first paragraph?
A．Women’s brain is 10% less than men’s
B．Grey matter plays the same role as white matter．
C．Grey matter controls thinking in the brain．
D．Both sexes have the same amount of white matter．
58．What can we infer from the second and third paragraphs?
A．Women prefer doing many things at a time．
B．Men do better dealing with one job at a time．
C．Women do not need to tell directions．
D．Men have weaker spatial abilities．
59．Which of the following do you agree with according to the fourth paragraph?
A．Young boys may be stronger than young girls．
B．More women take up jobs requiring speech skills
C．Women may have stronger feelings than men．
D．Our ancestors needed more spatial skills．
60．What is the writer’s attitude in writing this passage?
A．Defensive．        B．Persuasive． C．Supportive．        D．Objective．

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Runners in a relay（接力） race pass a stick in one direction．However, merchants passed silk, gold, fruit, and glass along the Silk Road in more than one direction．They earned their living by traveling the famous Silk Road．
The Silk Road was not a simple trading network．It passed through thousands of cities and towns．It started from eastern China, across Central Asia and the Middle East, and ended in the Mediterranean Sea．It was used from about 200 B．C．to about 1300 A．D．, when sea travel offered new routes（路线）．It was sometimes called the world’s longest highway．However, the Silk Road was made up of many routes, not one smooth path．They passed through what are now 18 countries．The routes crossed mountains and deserts and had many dangers of hot sun, deep snow and even battles．Only experienced traders could return safe．
The Silk Road got its name from its most prized product．Silk could be used like money to pay taxes or buy goods．But the traders carried more than just silk．Gold, silver, and glass from Europe were much found in the Middle East and Asia．Horses traded from other areas changed farming practices in China．Indian merchants traded salt and other valuable goods．Chinese merchants traded paper, which produced an immediate effect on the West．Apples traveled from central Asia to Rome．The Chinese had learned to graft（嫁接） different trees together to make new kinds of fruit．They passed this science on to others, including the Romans．The Romans used grafting to grow the apple．Trading along the Silk Road led to world-wide business 2,000 years before the World Wide Web．
The people along the Silk Road did not share just goods．They also shared their beliefs．The Silk Road provided pathways for learning, diplomacy（外交）, and religion （宗教）．
61．It’s probable that traders along the Silk Road needed ．
A．to remember the entire trade route     B．to know the making of products
C．to receive certain special training       D．to deal with a lot of difficulties
62．The Silk Road became less important because         ．
A．it was made up of different routes      B．silk trading became less popular
C．sea travel provided easier routes        D．people needed fewer foreign goods
63．What does the underlined part in Paragraph 3 refer to?
A．Silk．                            B．A trading network．
C．The world’s longest highway．      D．Goods．k.s.5.u
64．New technologies could travel along the Silk Road because people         ．
A．learned from one another             B．shared each other’s beliefs
C．traded goods along the route           D．earned their living by traveling
65．What is the best title for the passage?
A．The Silk Road: Past and Present       B．The Silk Road: East Meets West
C．The Silk Road: Routes Full of Dangers D．The Silk Road: Pathways for Learning

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The meaning of the word “volunteer” may be a little different in different countries, but it usually means “one who offers his or her services．” There are many different ways in which people can volunteer, such as taking care of sick people, working in homes for homeless children, and picking up garbage from beaches and parks．Volunteers may work within their own countries or in other countries．They are often people with a strong wish to help those who are less fortunate than themselves．Volunteers don’t expect any kind of pay．
At the root of volunteering is the idea that one person may have the ability to offer services that can help other people．Tracy, a good friend of mine, however, recently came back from India with a new idea of what being a volunteer means．She worked for two and a half weeks in one of Mother Teresa’s homes in Calcutta．The following is her story．
“I first heard about Mother Teresa in my high school．We watched a video about her work in India and all over the world．I was so moved by her spirit to help others and her endless love for every human being that after I graduated from high school, I too wanted to try her kind of work．So with two friends I flew to Calcutta for a few weeks．”
“I was asked to work in a home for sick people．I helped wash clothes and sheets, and pass out lunch．I also fed the people who were too weak to feed themselves and tried to cheer them up．I felt it was better to share with them than to think that I have helped them．To be honest, I don’t think I was helping very much．It was then that I realized that I had not really come to help, but to learn about and experience another culture that helped improve my own understanding of life and the world．”
66．According to the text, a volunteer refers to a person who ______．
A．is willing to help those in need without pay
B．can afford to travel to different places
C．has a strong wish to be successful
D．has made a big fortune in life
67．Tracy started her work as a volunteer _______．
A．after she met Mother Teresa
B．after she finished high school
C．when she was touring Calcutta
D．when she was working in a hospital
68．Why did Tracy choose to be a volunteer?
A．She liked to work with Mother Teresa．
B．She had already had some experience．
C．She was asked by Mother Teresa’s example．
D．She wanted to follow Mother Teresa’s example．
69．What is Tracy’s “new idea”（Paragraph 2） of being a volunteer?
A．Going abroad to help the sick．
B．Working in Mother Teresa’s home．
C．Doing simple things to help the poor．
D．Improving oneself through helping others．
70．What is the best title for the passage?
A．How To Be A Volunteer．             B．Voluntary Life In India．
C．A Different Meaning Of Volunteer．   D．Inspiration From Mother Teresa．

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The common cold is the world’s most widespread illness, which is plagues(疫病) that flesh receives.
The most widespread fallacy(谬误) of all is that colds caused by cold. They are not. They are caused by viruses(病毒) passing on from person to person. You catch a cold by coming into contact, directly or indirectly, with someone who already has one. If cold causes colds, it would be reasonable to expect the Eskimos to suffer from them forever. But they do not. And in isolated arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.
During the First World War soldiers who spent long periods in the trenches(战壕), cold and wet, showed no increased tendency to catch colds.
In the Second World War prisoners at the notorious Auschwitz concentration camp(奥斯维辛集中营), naked and starving, were astonished to find that they seldom had colds. At the Common Cold Research Unit in England, volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time. After taking hot baths, they put on bathing suits, allowed themselves to be with cold water, and then stood about dripping wet in drafty room. Some wore wet socks all day while others exercised in the rain until close to exhaustion. Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.
If, then, cold and wet have nothing to do with catching colds, why are they more frequent in the winter？Despite the most pains-taking research, no one has yet found the answer. One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times, and this makes it easier for cold viruses to be passed on.
No one has yet found a cure for the cold. There are drugs and pain suppressors(止痛片) such as aspirin, but all they do is relieve the symptoms(症状).
51. The writer offered _______ examples to support his argument.
A. 4            B. 5              C. 6              D. 3
52. Which of the following does not agree with the chosen passage?
A. The Eskimos do not suffer from colds all the time.
B. Colds are not caused by cold.
C. People suffer from colds just because they like to stay indoors.
D. A person may catch a cold by touching someone who already has one.
53. Arctic explorers may catch colds when _______.
A. they are working in the isolated arctic regions
B. they are writing reports in terribly cold weather
C. they are free from work in the isolated arctic regions
D. they are coming into touch again with the outside world
54. Volunteers taking part in the experiments in the Common Cold Research Unit _______.
A. suffered a lot                             B. never caught colds
C. often caught colds                 D. became very strong
55. The passage mainly discusses _______.
A. the experiments on the common cold
B. the fallacy about the common cold
C. the reason and the way people catch colds
D. the continued spread of common colds

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There are two types of people in the world. Although they have equal degree of health and wealth and other comforts of life, one becomes happy and the other becomes unhappy. This arises from the different ways in which they consider things, persons, events and the resulting effects upon their minds.
People who are to be happy fix their attention on the convenience of things: the pleasant parts of conversation, the well prepared dishes, the goodness of the wine and the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the opposite things. Therefore, they are continually dissatisfied. By their remarks, they sour the pleasure of society, offend(hurt) many people, and make themselves disagreeable everywhere. If this turn of mind was founded in nature, such unhappy persons would be the more to be pitied. The intention of criticizing(批评) and being disliked is perhaps taken up by imitation(模仿). It grows into a habit, unknown to its possessors. The habit may be strong, but it may be cured when those who have it realize its bad effects on their interests and tastes. I hope this little warning may be of service to them, and help them change this habit.
Although in fact it is chiefly an act of the imagination, it has serious results in life since it brings on deep sorrow and bad luck. Those people offend many others; nobody loves them, and no one treats them with more than the most common politeness and respect. This frequently puts them in bad temper and draws them into arguments. If they aim at getting some advantages in social position or fortune, nobody wishes them success. Nor will anyone start a step or speak a word to favor their hopes. If they bring on themselves public objections, no one will defend or excuse them, and many will join to criticize their wrongdoings. These should change this bad habit and be pleased with what is pleasing, without worrying needlessly about themselves and others. If they do not, it will be good for others to avoid any contact(接触) with them. Otherwise, it can be disagreeable and sometimes very inconvenient, especially when one becomes mixed up in their quarrels.
46. People who are unhappy _______.
A. always consider things differently from others
B. usually are affected by the results of certain things
C. usually misunderstand what others think or say
D. always discover the unpleasant side of certain things
47. The phrase “sour the pleasure of society” most nearly means “_______”.
A. have a good taste with social life B. make others unhappy
C. tend so scold others openly D. enjoy the pleasure of life
48. We can conclude from the passage that _______.
A. we should pity all such unhappy people
B. such unhappy people are dangerous to social life
C. people can get rid of the habit of unhappiness
D. unhappy people can not understand happy persons
49. If such unhappy persons insist on keeping the habit, the author suggests that people should _______.
A. prevent any communication with them
B. show no respect and politeness to them
C. persuade them to recognize the bad effects
D. quarrel with them until they realize the mistakes
50. In this passage, the writer mainly _______.
A. describes two types of people
B. laughs at the unhappy people
C. suggests the unhappy people should get rid of the habits of unhappiness
D. tells people how to be happy in life

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