At present nanotechnology, a kind of tip science to the common people. Few people know him. A. unknowing B. unknown C. known D. Untrue 题目和参考答案——青夏教育精英家教网—

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123. At present nanotechnology(纳米技术), a kind of tip science_________to the common people. Few people know him.

A. unknowing B. unknown C. known D. Untrue

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Electronic waste, or e-waste, refers to electronic products that are no longer usable. This can include TVs, cell phones and computers and other office electronics, electronic toys and videos machines. Today, the average turnover（更换）rate for a computer in the United States is every two years, according to the environmental group, Greenpeace.

The group's Dai Yun says e-waste is a global problem. "The electronic industry is one of the fastest growing industries in the world. The high speed of growth in this industry means more and more electronic products are being wasted and thrown away. If no one decides to retrieve the old products and process them properly, the electronic waste will sweep over the earth like the huge wave behind me and pollute the Earth seriously."

Greenpeace works out that 20 to 50 million tons of e-waste are produced globally each year. The components（部件）in many electronic products contain harmful chemicals that pollute ground water and the environment.

At present , the U.S. has no federal law for the disposal (处理) of e-waste although a few states have e-waste recycling programs in place, but there is no law. The U.S. exports much of its e-waste to third world countries, such as India and China, where workers took apart computers for valuable parts, hoping to sell them for money. But harmful wastes expert, Dr. Bakul Rao, says that's a dangerous practice. "From now on, the recyclers are not very educated. All they know is they can retrieve copper or gold out of it. So, the easiest way to do that is leach (过滤) it out in an acid or burn it off to retrieve it. So, that's where they don't know how to deal with it, neither do they have any health systems in place. So, their exposure is more."

Which of the following is most likely not to be a form of e-waste?

A. A mobile phone B. A radio C. An e-bike D. A table

What does the underlined word "retrieve" (paragraph 2) probably mean?

A. look into B. take apart C. get back D. throw away

What of the following statements is true according to the passage？

A. The U.S. has strict national laws for dealing with e-waste.

B. Third world countries import e-waste to get valuable parts, which is a safe and easy way to

make money.

C. The way uneducated workers deal with old computers does great harm to the environment as well as to their own health.

D. More and more electronic waste is being wasted and thrown away mainly because of

people's bad habits.

What is the purpose of writing the passage?

A. To attract more people's attention to e-waste.

B. To call on people not to throw away e-waste anywhere.

C. To tell people what e-waste is and how to deal with it well.

D. To warn people to break away from the electronic industry.

The next paragraph probably concerns_______.

A. how to deal with e-waste properly

B. how to protect ourselves from harm by e-waste

C. How to slow down the development in the electronic industry

D. how to make full use of e-waste

Among all the fast growing science and technology, the research of human genes, or biological engineering as people call it, is drawing more and more attention now. Sometimes it’s a hot topic discussed by people.

The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two killers. And to date, doctors have not found an effective way to cure them. But if the gene technology is applied, not only these two diseases can be cured completely, bringing happiness and more living days to the patients, but also the great amount of money people spend on curing their diseases can be saved, therefore it benefits the economy as well. In addition, human life span(寿命) can be prolonged.

Gene technology can help people to give birth to more healthy and clever children. Some families, with the English imperial(皇帝的) family being a good example, have hereditary(遗传的) diseases. This means their children will for sure have the family disease, which is a great trouble for these families. In the past, doctors could do nothing about hereditary diseases. But gene technology can solve this problem perfectly. Scientists just need to find the wrong gene and correct it, and a healthy child will be born.

Some people are worrying that the gene research can be used to manufacture(生产) human beings in large quantities. In the past few years, scientists have succeeded in cloning a sheep; therefore these people predict that human babies would soon be cloned. But I believe cloned babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the governments must take care to control gene technology.

What does "these two killers" in the second paragraph refer to?

A. Gene technology and another treatment of the two diseases.

B. The two murderers who killed the cloned baby.

C. The two diseases of cancer and heart disease.

D. Hereditary diseases and cancer.

What’s the main idea of the third paragraph?

A. Gene technology can help people to give birth to a baby.

B. Gene technology can be used to clone human babies.

C. How gene technology can be used to treat hereditary diseases.

D. Gene technology can solve all the problems of the English imperial family.

In what way can gene technology help to treat hereditary diseases?

A. Gene technology helps people with hereditary diseases to live longer.

B. Using gene technology, scientists find the wrong gene and correct it.

C. Using gene technology, human babies can be cloned.

D. Doctors can cure cancer and heart disease with the help of gene technology.

What is the main purpose of writing this passage?

A. Expressing the writer's idea that gene technology will benefit people.

B. Telling people the advantages and disadvantages of gene technology.

C. Telling the readers that gene technology will not benefit people.

D. Explaining that gene technology will also do harm to the humanity.

Shanghai-More Shanghai people are renting cars to travel over the coming National Day holiday, Tom reported today.

Most cars in large local car-rental companies such as Yongda, Anji and Dazhong are leased so far with the Buick Sport Utility Vehichle (SUV) in high demand.

Santana and Jetta were previously the most popular car models rented by Shanghai people for travel, while the high-end Buick models have generated great interest among locals renting cars these years. However, the rent on a Buick GL or GS model is between 650 yuan and 750 yuan a day, nearly double those of the Santana and Jetta cars.

Compared with Santana, Buick looks better, has greater capabilities and is safer and more comfortable, said a car leaser. “I don’t mind paying a higher cost for a Buick to enjoy the holiday,” he said.

SUV cars are very popular in the car renting market, according to some car rental firms.

“All the 31 Buick GL8SUV cars were leased out several days ago,” said an employee with the Shanghai Yongda Car Rental Co.

local people are more inclined (倾向于) to go travel with groups of friends, so SUV cars are a better choice, said an industry analyst (分析家). Moreover, SUV car are safer on rugged and rough roads, the analyst said.

According to the data, most people rented cars for seven days; a less number rented them for two or three days.

1. What’s the best title for the passage ?

How Shanghai People Spend Their Holidays

Why So Many Shanghai People Rented Cars for Holidays

More Shanghai Rent Cars for Holidays

Shanghai Rent SUV Instead of Santana and Jetta

2. According to the passage we can see SUV is ________.

the name of a car-rental company

the name of an expensive car

the name of an ordinary car

the place for the holiday

3. At present for how much money can you rent a Santana or Jetta for a day ?

Between 650 yuan and 750 yuan.

Between 350 yuan and 380 yuan.

About 450 yuan.

Less than 300 yuan.

4. Why do many people choose SUV cars for their holidays ?

Because they are cheaper.

Because they are convenient on rugged and rough roads.

Only because they can run on bugged and tough roads.

Because no Santana and Jetta can be rented now.

— Now that you like the computer so much, why not buy one?

— Well, I can’t afford ______ computer at present.

A. that expensive a B. a such cheap C. a so cheap D. that an expensive

The United States of America is the most culturally diverse(多样化) country in the world in terms of culture religion, ethnicity(种族) and sexual orientation. As a combination of various races and cultures, America is home to all. The culture here is so unique that citizens can be just as proud of their original cultural heritage(遗产) as they are to be American.

What is now the US was initially inhabited(居住) by native people until the land was settled by various European groups and African slaves. Since the 20th century, the country has become a heaven for people from all over the globe(全球).

The arrival of immigrants(移民) has shifted populations from rural(农村的) areas into cities because immigrants tend to settle in urban areas. At present, 81 percent of the inhabitants in the US live in cities.

Cultural and ethnic diversity adds a unique flavor to cities that is expressed through distinct(独特的) neighborhoods, restaurants, places of worship, museums, nightlife and multicultural learning environments.

Unique musical forms, such as jazz, rock and roll, Chicano music, and the blues, grow in the US by mixing a variety of culturally distinct musical traditions to create a new form.

At the executive (行政的) level, the country is headed by a mixedrace president; two posts(职位) on the Supreme Court are held by members of the country's two largest minorities.There is also diversity in state and local governments.

Without its rich mixture of races and cultures, America would not be the nation that it is today. Founded upon the basis of equality and freedom, America acts as a stage where different cultures not only coexist peacefully, but develop well.

1.According to the passage, America is a country________.

A．that welcomes people from all over the world

B．where citizens take more pride in their original culture

C．that is mostly settled by Europeans and Africans

D．where 81% of the population are immigrants

2.Where did most people live before many immigrants came to America?

A．In the urban areas. B．In the rural areas.

C．In the southern part of America. D．In the northern part of America.

3.We can learn from the sixth paragraph that________.

A．diversity(多样化) has existed in America in almost every aspect(方面)

B．most posts in American state governments are held by mixedrace people

C．equality and freedom make America a fair country

D．diversity has greatly affected the American political field

4.What's the best title for this passage?

A．The effects of culture and diversity on America.

B．The influence of globalization on America.

C．The political development of America.

D．The bright future of America.

5.We would most probably read this passage in a book about________.

A．science B．history C．culture D．amusement

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