–What’s the noise?–It’s the drill. Since the ...

–What’s the noise?

–It’s the drill. Since the beginning of the term, the workers _______ our heating system.

A. are repairing                 B. have been repairing    C. will be repairing  D. repair

高二英语单项填空简单题查看答案及解析

At the beginning of class, the noise of desks ______ could be heard outside the classroom.

A. opened and closed                     B. to be opened and closed

C. being opened and closed              D. to open and close

高二英语单项填空简单题查看答案及解析

At the beginning of class, the noise of desks ______ could be heard outside the classroom.

A. opened and closed                                 B. to be opened and closed

C. being opened and closed                        D. to open and close

高二英语单项填空困难题查看答案及解析

Since the beginning of history, man has been attracted by the idea of living forever, of winning the fight against death and disease. So far, this has only remained a dream. Many people have wondered whether it would be possible to find a way to preserve human bodies, and what would be the best way.

It has long been known that meat of fruit can be kept fresh for long periods by freezing; in ancient China, for example, food was stored with ice to keep it fresh. This method could also be useful for preserving humans.

However, most living beings that exist under warm conditions die when frozen. This is because of the harmful effects of freezing ice crystals(晶体), which not only are larger than the volume(体积) of the water originally in the cells, but also form sharp cutting shapes that harm the cells.

In the 1940s Dr B.J. Luyet and a group of scientists in England were working on the problem of freezing cells without damaging them. Since the harm caused by ice crystals was the main cause of damage, Luyet suggested removing some or all of the water from the cells before freezing them.

Using living cells form chicken, Luyet and his assistants discovered that they could partly dry the chicken cells, using a mixture of the white part of an egg and glycerin (丙三醇). Some success was obtained. The chicken cells were dried, frozen for a period of time, and then carefully unfrozen. Almost all the cells recovered when they reached normal temperatures.

Since then, the cooling of whole animals to a temperature far below freezing point for later unfreezing has become more of a possibility, and the glycerin method would probably be used to accomplish this. When this can be done completely and successfully, science will have moved much closer to its aim of freezing and storing incurable patients until the day they can be cured.

1.What does the passage mainly talk about?

A．Easy but practical ways to remove water from living cells.

B．The possibility of preserving human bodies by freezing.

C．The practice of preserving food by freezing.

D．The harmful effects of freezing.

2.The idea of freezing human bodies to preserve them ______________.

A．has already been realized

B．was invented in ancient China

C．has its roots in the way of storing food

D．is widely accepted by the scientific world

3.According to the text, freezing _________________.

A．is harmful to living cells

B．is the best way of preserving food

C．reduces the volume of water in living cells

D．is a way of removing water from living cells

4.What can be inferred from the last paragraph?

A．It is impossible to have whole animals frozen.

B．It remains unknown how to unfreeze frozen animals.

C．Freezing incurable patients for later treatment is still an idea.

D．The glycerin method has already been adopted to treat patients.

高二英语阅读理解中等难度题查看答案及解析

Since the beginning of the year, smog(雾霾) has covered parts of North China. In January, Beijing saw only five days without smog. The rising PM2.5 readings terrified many people, and some health experts said that whenever the smog gets serious, hospitals receive more patients suffering acute respiratory (呼吸系统) and heart diseases.

Later, news of polluted underground water in some provinces scared people who wondered whether the water they drink is safe.

So the need to emphasize environmental protection while developing the economy is heard everywhere.

Smog is especially a common concern. As a popular online post said, air may be the only thing that is equal for everyone, despite your income or profession. People with higher incomes are able to drink only bottled spring water and eat only organic food by paying higher prices, but they breathe the same air as everyone else.

At a meeting on Monday, many representatives have expressed their concerns about the air quality, too. One talked about his experience in Beijing. “After taking a taxi from the capital airport to my hotel, which took about an hour, I washed my nose and found the inside of my nose was black. We should ask ourselves this question: Why do we want to develop? It's for living a better life. Dirty air is definitely not a better life,” he said.

China needs to develop its economy and invest (投资) in high­tech. Every Chinese has a dream to make China stronger. But without blue sky, clean water and safe food, the achievements in the economy will become meaningless. Space technologies are not to be developed for building a base on Mars so that one day all human beings can move to the red planet because they have destroyed Earth.

What the public wants is a strong and beautiful China. The great efforts must be made to promote ecological progress and build a beautiful China. The words have shown the central government's determination to address the environment issue.

1.The effect of smog doesn't include ________.

A. the increase of people's income

B. more people suffering diseases

C. the rising of PM2. 5 readings

D. patients increased in hospital

2.Why has smog become a common concern ________?

A. Because people have to pay higher prices.

B. Because a popular online­post discussed it.

C. Because we have to develop industry.

D. Because nobody can avoid it.

3.To make China stronger we have to develop economy, but ________.

A. we have to sacrifice air as the price

B. the smog is the only by product

C. ecological progress can be ignored

D. the dirty air is not what we want

4.The underlined word “they” in Paragraph 6 refers to ______.

A. space technologies　　　　 B. other planets

C. human beings　　　　　　　　 D. industrial development

5.From the last two paragraphs we can infer that ________.

A. high­tech can completely solve the problem of pollution

B. we must protect the environment while developing economy

C. we can move to Mars after the earth has been destroyed

D. space technologies should be developed in a large scale

高二英语阅读理解中等难度题查看答案及解析

Since the beginning of the year, smog has covered parts of North China. In January, Beijing saw only five days without smog. The rising PM2.5 readings terrified many people, and some health experts said that whenever the smog gets serious, hospitals receive more patients suffering acute respiratory (呼吸系统) and heart diseases.

Later, news of polluted underground water in some provinces scared people who wondered whether the water they drink is safe.

So the need to emphasize environmental protection while developing the economy is heard everywhere.

Smog is especially a common concern. As a popular online post said, air may be the only thing that is equal for everyone, despite your income or profession. People with higher incomes are able to drink only bottled spring water and eat only organic food by paying higher prices, but they breathe the same air as everyone else.

At a meeting on Monday, many representatives have expressed their concerns about the air quality, too. One talked about his experience in Beijing. “After taking a taxi from the capital airport to my hotel, which took about an hour, I washed my nose and found the inside of my nose was black. We should ask ourselves this question: Why do we want to develop? It's for living a better life. Dirty air is definitely not a better life，” he said.

China needs to develop its economy and invest (投资) in high­tech. Every Chinese has a dream to make China stronger.　 But without blue sky, clean water and safe food, the achievements in the economy will become meaningless. Space technologies are not to be developed for building a base on Mars so that one day all human beings can move to the red planet because they have destroyed Earth.

What the public wants is a strong and beautiful China. The great efforts must be made to promote ecological progress and build a beautiful China. The words have shown the central government's determination to address the environment issue.

1.The effect of smog doesn't include ________.

A．the rising of PM2.5 readings

B．more people suffering diseases

C．the increase of people's income

D．patients increased in hospital

2.Why has smog become a common concern?

A．Because people have to pay higher prices.

B．Because nobody can avoid it.

C．Because we have to develop industry.

D．Because a popular online­post discussed it.

3.To make China stronger we have to develop economy, but ________.

A．we have to sacrifice air as the price

B．the dirty air is not what we want

C．ecological progress can be ignored

D．the smog is the only byproduct

4.From the last two paragraphs we can infer that ________.

A．high­tech can completely solve the problem of pollution

B．space technologies should be developed in a large scale

C．we can move to Mars after the earth has been destroyed

D．we must protect the environment while developing economy

高二英语阅读理解中等难度题查看答案及解析

American English began in the 17th century. At the beginning of the 17th century, the English language was brought to North America by colonists (殖民者) from England. They used the language spoken in England, that is, Elizabethan English, the language used by Shakespeare.

In order to exploit (开发) new resources in America, British colonists settled down there and from 1607 to 1732 set up thirteen colonies. In these thirteen areas, English was a common language used by all people. They continued to speak as they had done in England.

As time went by, the English language gradually changed on both sides of the Atlantic Ocean. Foreigners longing for wealth set foot on the coastal area to trade. The Americans adopted many words from foreign languages and invented lots of new words to meet their commercial (贸易的) needs.

Following American Independence, famous people like Thomas Jefferson, the president, began to consider that the country should have a language of its own. Noah Webster compiled (编纂) three elementary books on English. Later, he expressed the idea that as an independent nation, America should have a system of its own in language as well as in government. After the second half of the 19th century, many great writers such as Mark Twain helped the development of American English.

English in America has developed a character of its own, showing the life and the physical and social environment of the American people. Since the rise of the United States to a position of world importance, American English has been developing and changing. There is no doubt that American English will enrich the English language greatly. With the rapid development of modern mass media and the common needs of economic, cultural and political exchanges, American English will be more widely used in the world than British English.

1.What can we infer from paragraph 3?

A. People from the seaside were more willing to learn English.

B. The English language changed as a result of inner culture shock.

C. New words occurred in American English as a result of local invention.

D. International business contributed to the development of American English.

2.What do we know about American English according to the passage?

A. It came into being at the end of the 17th century.

B. It hardly makes contributions to the development of English.

C. Its development has a close relationship with American people’s life.

D. It has been more widely used than British English from the beginning.

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

A. The Difference between American English and British English.

B. The development of American English.

C. The Birth of American English.

D. Language and Business.

高二英语阅读理解中等难度题查看答案及解析

.______ the beginning of the 19th century did scientists know that all matter is made up of atoms.

A. At          B. By            C. Up to         D. Not until

高二英语单项填空简单题查看答案及解析

_____the beginning of the 19^th century did scientists know that all matter is made up of atoms.

A,At     B,By     C,Up to     D,Not until

高二英语单项填空中等难度题查看答案及解析

At the beginning of the 20th century there were more than a million lions worldwide.Today there are less than 30,000 in the wild.The remaining lions are increasingly threatened by habitat loss，hunting activities to protect farms and cattle.

For generations，Masai tribesmen on the large African plains in southeastern Kenya have hunted lions—to protect their farms and cattle.Today they celebrate the lions’ life.

Noah is an elder in the Masai community.“We have decided as a community of the Masai to lay down our spears，and there will be no more killing of lions in our community.” He is part of a group of Masai visiting the United States promoting (推广) the Predator (捕食性动物) Compensation Program.

Conservation International’s Frank Hawkins explains，“The Masai have been living with wildlife for many generations and it has been a conflicting relationship in many ways.They compete with the animals for food as lions eat their cattle.We’re trying to find ways in which the wildlife will become something useful to them.” They had the Predator Compensation Fund founded in 2003.After much discussion，a group of Masai farmers agreed to protect lions.In turn，if lions or other predators kill their cattle，the Masai owner will be paid market value for the dead animals from the fund.

One man said that in the past，when a lion killed cattle，they killed it on the spot.And now，after the start of the program，the Masai see the lion population growing.Since 2003，only four lions have been killed here.

1.What is this passage mainly about?

A. The wildlife in the world.

B. Lions and the Masai.

C. The reason why lions are killed.

D. The living ways of the Masai.

2.What is the aim of the Predator Compensation Program?

A. To protect people in the wild.

B. To help the Masai protect their farms and cattle.

C. To protect lions only.

D. To protect the wildlife.

3.Masai tribesmen killed lions before 2003 ______.

A. because lions were dangerous for people there

B. because dead lions were worth a lot of money

C. because they wanted lions’ meat

D. because they wanted to protect their farms and cattle

4.According to the passage，why haven’t Masai tribesmen killed many lions since 2003?

A. Because lions don’t eat their cattle any more.

B. Because they will be fined if they kill lions there.

C. Because if a lion kills their cattle，they will be paid for the dead animals from the fund.

D. Because there are less than 30,000 lions in the wild now.

5.What do you think of the Masai?

A. Reasonable.　　 B. Cruel.

C. Poor.　　 D. Stupid.

高二英语阅读理解中等难度题查看答案及解析