People and the sources of air pollution are found in the same places. This means that cities with large populations have the biggest problem of dirty air. Air pollution is caused by many different things. A major source of air pollution is the gas fumes from cars. Statistics show that 93 percent of all auto trips are within cities. Another major source of dirty air is the burning of coal and oil for energy. This energy is needed to make electricity. Of course, much more electricity is used in the city than in the country.
On the average, we throw away more trash and garbage than the year before. The burning of garbage contributes to air pollution. Many major industries are also responsible for the dirty air in the around cities. The fumes from iron, steel, chemical, and petroleum production add particles to the air.
The effects of air pollution range from mild headaches to death. The levels of pollution found in heavy for traffic may cause headaches for loss of clear vision. Wherever coal and oil are used for fuel, fumes may kill trees and plants and cause metal to corrode. In some of the larger cities, these fumes endanger the live of human beings by contributing to lung diseases and causing early death.
15．The key point of the passage is that _________.
A. the cause of air pollution is people
B. the causes and the effects of air pollution are both found in cities
C. the effects of air pollution range from headaches to death
D. air pollution is caused by dirty air
16．What is the purpose of this passage?
A. to persuade people to stop polluting the air
B. to tell the causes of air pollution
C. to tell why cities are bad places to live
D. to describe why cities are bad places to live
17. Why is air pollution more grave in the city than in the country?
A. Because there larger populations in cities.
B. Because the air in the city is dirty.
C. Because there are more cars in the city.
D. Because there are much more gas fumes from cars and burning of coal and oil for energy
in the city than in the country.
18．The fumes from coal and oil may cause metal ______.
A. to turn black B. to become rusty
C. to corrode D. to twist
19. In larger cities, the fumes from coal and oil may contribute to ___________.
A. heart disease B. lung diseases
C. loss of clear vision D. serious headache
It may help you to know that there is no such thing as a perfect speech.At some point in every speech,every speaker says something that is not understood exactly as he has planned.Fortunately,such moments are usually not obvious(明显的) to the listeners.Why?Because the listeners do not know what the speaker plans to say.They hear only what the speaker does say.If you lose your place for a moment,wrongly change the order of a couple of sentences,or forget to pause at a certain point,no one will be any the wiser.When such moments occur,don't worry about them.Just continue as if nothing happened.
Even if you do make an obvious mistake during a speech,that doesn't really matter.If you have ever listened to Martin Luther King's famous speech-"I Have a Dream",you may notice that he stumbles(结巴) over his words twice during the speech.Most likely,however,you don't remember.Why?Because you were fixing your attention on his message rather than on his way of speech-making.
People care a lot about making a mistake in a speech because they regard speech-making as a kind of performance rather than as an act of communication(交流).They feel the listeners are like judges in an ice-skating competition.But,in fact,the listeners are not looking for a perfect performance.They are looking for a well-thought-out speech that expresses the speaker's ideas clearly and directly.Sometimes a mistake or two can actually increase a speaker's attractiveness by making him more human.
As you work on your speech,don't worry about being perfect.Once you free your mind of this,you will find it much easier to give your speech freely.
| 1． |
The underlined part in the first paragraph means that no one will.
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| 2． |
You don't remember obvious mistakes in a speech because.
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| 3． |
It can be inferred from the passage that.
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| 4． |
What would be the best title for the passage?
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All her life,my mother wanted busy children.It was very important that her house should remain at all times clean and tidy.
You could turn your back for a moment in my mother's house,leave a half-written letter on the dining room table,a magazine open on the chair,and turn around to find that my mother had "put it back where it belonged,"as she explained.
My wife,one of her first visits to my mother's house,placed a packet of biscuits on an end table and went to the kitchen to fetch a drink.When she returned,she found the packet had been removed.Confused(疑惑的),she set down her drink and went back to the kitchen for more biscuits,only to return to find that her drink had disappeared.Up to then she had guessed that everyone in my family held onto their drinks,so as not to make water rings on the end tables.Now she knows better.
These disappearances had a confusing effect on our family.We were all inclined to(有……的倾向) forgetfulness,and it was common for one of us,upon returning from the bathroom,to find that every sign of his work in progress had disappeared suddenly."Do you remember what I was doing?"was a question frequently asked,but rarely answered.
Now my sister has developed a second-hand love of clean windows,and my brother does the cleaning in his house,perhaps to avoid having to be the one to lift his feet.I try not to think about it too much,but I have at this later time started to dust the furniture once a week.
We have all become busy persons.
| 1． |
Which of the following is TRUE about my mother?
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| 2． |
My wife could not find her biscuits and drink in my mother's house because.
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| 3． |
The underlined part in the fifth paragraph suggests that my sister.
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| 4． |
This passage mainly tells us that.
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Most rain forests lie close to the equator(赤道),where the climate is often mild and there are long hours of sunshine.The warmth of the land heats the air above,causing it to rise and tiny drops of water to fall as rain.The rainfall can reach at least 98 inches a year.This wet,warm world with plenty of sunlight is perfect for plants to grow,so the trees grow fast with green leaves all the year round.The trees themselves also have an effect on the climate.They gather water from the soil and pass it out into the air through their leaves.The wet air then forms clouds,which hang over the treetops like smoke.These clouds protect the forest from the daytime heat and night-time cold of nearby deserts,keeping temperatures fit for plant growth.
Rain forests slightly farther away from the equator remain just as warm,but they have a dry season of three months or more when little rain falls.Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon(雨季) begins.Thus these areas are known as the “monsoon forest”.
Another type of rain forest grows on tropical mountains.It is often called the “cloud forest” because clouds often hang over the trees like fog.
The rain forest is the ideal place for the growth of many different trees.Most of them depend on animals to eat their fruits and spread their seeds.When the fruits are eaten,the seeds inside them go undamaged through animals’ stomachs and are passed out in their droppings.The seeds lying on the forest floor then grow into new trees.The climate of the rain forests near the equator is _______.
| A．mild,wet and windy | B．hot,rainy and foggy |
| C．hot,wet and cloudy | D．warm,wet and sunny |
We can learn from the passage that _______.
| A．tree leaves are green all the time in the monsoon forest |
| B．there is a dry season in the cloud forest on tropical mountains |
| C．clouds help the plants in the rain forest near the deserts to grow |
| D．the formation of climate in the rain forest has little to do with the trees |
According to the passage,_______ play the most important role in the spreading of seeds.
| A．animals | B．droppings | C．fruits | D．winds |
This passage is most likely to be found in _______.
| A．a travel guide | B．a story book |
| C．a technical report | D．a geography book |
Danielle Steel,America’s sweetheart,is one of the hardest working women in the book business.Unlike other productive authors who write one book at a time,she can work on up to five.Her research alone before writing takes at least three years.Once she has fully studied her subjects,ready to dive into a book,she can spend twenty hours nonstop at her desk.
Danielle Steel comes from New York and was sent to France for her education.After graduation,she worked in the public relations and advertising industries.Later she started a job as a writer which she was best fit for.Her achievements are unbelievable:390 million copies of books in print,nearly fifty New York Times best-selling novels,and a series of “Max and Martha” picture books for children to help them deal with the real-life problems of death,new babies and new schools.Her 1998 book about the death of her son shot to the top of the New York Times best-selling list as soon as it came out.Twenty-eight of her books have been made into films.She is listed in the Guinness Book of World Records for one of her books being the Times best-seller for 381 weeks straight.
Not content with a big house,a loving family,and a view of the Golden Gate Bridge,Danielle Steel considers her readers to be the most important resource(资源) and has kept in touch with them by e-mail.While she is often compared to the heroines(女主人公) of her own invention,her life is undoubtedly much quieter.But,if she does have anything in common with them,it is her strength of will and her inimitable(独特的) style.There is only one Danielle Steel.Danielle Steel is different from other writers in that _______.
| A．she can write several books at the same time |
| B．she often does some reasearch before writing a book |
| C．she is one of the most popular American women writers |
| D．she can keep writing for quite a long time without a break |
Children who have read “Max and Martha” picture books may know _______.
| A．how to deal with affairs at school |
| B．what to do if Max and Martha die |
| C．what to do when new babies are born into their families |
| D．how to solve the difficult problems in their writing classes |
One of Danielle Steel’s achievements is that _______.
| A．some TV plays were based on her books |
| B．her picture books attracted a lot of young men |
| C．one of her books became a best-seller in 1998 |
| D．she wrote the Guinness Book of World Records |
We can learn from the passage that Danielle Steel _______.
| A．lives an exciting life | B．values her readers a lot |
| C．writes about quiet women | D．is pleased with her achievements |
What will people die of 100 years from now?If you think that is a simple question,you have not been paying attention to the revolution that is taking place in bio-technology(生物技术).With the help of new medicine,the human body will last a very long time.Death will come mainly from accidents,murder and war.Today’s leading killers,such as heart disease,cancer,and aging itself,will become distant memories.
In discussion of technological changes,the Internet gets most of the attention these days.But the change in medicine can be the real technological event of our times.How long can humans live?Human brains were known to decide the final death.Cells(细胞) are the basic units of all living things,and until recently,scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells,such as those of brain cells,would not last forever.But the upper limits will be broken by new medicine.Sometime between 2050 and 2100,medicine will have advanced to the point at which every 10 years or so,people will be able to take medicine to repair their organs(器官).The medicine,made up of the basic building materials of life,will build new brain cells,heart cells,and so on—in much the same way our bodies make new skin cells to take the place of old ones.
It is exciting to imagine that the advance in technology may be changing the most basic condition of human existence,but many technical problems still must be cleared up on the way to this wonderful future.According to the passage,human death is now mainly caused by _______.
| A．diseases and aging | B．accidents and war |
| C．accidents and aging | D．heart disease and war |
In the author’s opinion,today’s most important advance in technology lies in _______.
| A．medicine | B．the Internet |
| C．brain cells | D．human organs |
Humans may live longer in the future because _______.
| A．heart disease will be far away from us |
| B．human brains can decide the final death |
| C．the basic materials of cells will last forever |
| D．human organs can be repaired by new medicine |
We can learn from the passage that _______.
| A．human life will not last more than 120 years in the future |
| B．humans have to take medicine to build new skin cells now |
| C．much needs to be done before humans can have a longer life |
| D．we have already solved the technical problems in building new cells |
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