The water and soil conservation project resul...

The water and soil conservation project resulted in farmers ______ the crops on the farmland  _____ trees and grass.

A．to replace; with                        B．to replace; for

C．replacing; with                         D．replacing; for

高二英语单项填空中等难度题查看答案及解析

The water and soil conservation project resulted in farmers ______ the crops on the farmland  _____ trees and grass.

A．to replace; with     B．to replace; for      C．replacing; with     D．replacing; for

高二英语单项填空困难题查看答案及解析

They carried out an assessment of the project this morning and the results will be assessed ______.

A. on time              B. after time           C. before time          D. over time

高二英语单项填空中等难度题查看答案及解析

The project, started in 1998, has 　　　　 more girls having chances to get higher education.

A. resulted from　 B. resulted in

C. come about　　 D. tried out

高二英语单项填空简单题查看答案及解析

Lead（铅） deposits, which accumulated（增加） in soil and snow during the 1960's and 70's, were primarily the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated（托管） unleaded gas use in the United States, the lead accumulation world-wide has decreased greatly.

A study published recently in the journal Nature shows that air-borne leaded gas emissions from the United States were the leading contributor to the high concentration of lead in the snow in Greenland. The new study is a result of the continued research led by Dr. Charles Boutron, an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France. A study by Dr. Boutron published in 1991 showed that lead levels in arctic (北极的) snow were declining（减少）.

In his new study, Dr. Boutron found the ratios of the different forms of lead in the leaded gasoline used in the United States were different from the ratios of European, Asian and Canadian gasoline and thus enabled scientists to differentiate (分区) the lead sources. The dominant lead ratio found in Greenland snow matched that found in gasoline from the United States.

In a study published in the journal Ambio, scientists found that lead levels in soil in the North-eastern United States had decreased markedly since the introduction of unleaded gasoline. Many scientists had believed that the lead would stay in soil and snow for a longer period.

The authors of the Ambio study examined samples of the upper layers of soil taken from the same sites of 30 forest floors in New England, New York and Pennsylvania in 1980 and in 1990. The forest environment processed and redistributed (再分配)the lead faster than the scientists had expected. Scientists say both studies show that certain parts of the ecosystem (生态系统 ) respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.

1. The study published in the journal Nature indicates that ________.

A. the Clean Air Act has not produced the desired results

B. lead deposits in arctic snow are on the increase

C. lead will stay in soil and snow longer than expected

D. the US is the major source of lead pollution in arctic snow

2. Lead accumulation worldwide decreased significantly after the use of unleaded gas in the US ________.

A. was discouraged               B. was carried out by law

C. was forbidden by law           D. was introduced

3. How did scientists discover the source of lead pollution in Greenland?

A. By analyzing the data published in journals like Nature and Ambio.

B. By observing the lead accumulations in different parts of the arctic area.

C. By studying the chemical elements of soil and snow in Northeastern America.

D. By comparing the chemical compositions of leaded gasoline used in various countries.

4. The authors of the Ambio study have found that ________.

A forests get rid of lead pollution faster than expected

B. lead accumulations in forests are more difficult to deal with

C. lead deposits are widely distributed in the forests of the US

D. the upper layers of soil in forests are easily polluted by lead emissions

5. It can be inferred from the last paragraph that scientists ________.

A. are puzzled by the mystery of forest pollution

B. feel ease by the use of unleaded gasoline

C. still consider lead pollution a problem

D. lack enough means to combat lead pollution

高二英语阅读理解简单题查看答案及解析

It is reported that conservation groups in North America have been arguing about the benefits and dangers of wolves. Some groups believe wolves should be killed. Other people believe wolves must be protected so that they will not disappear from the wilderness (荒野)

For Killing Wolves

In Alaska, the wolf almost disappeared a few years ago, because hunters were killing hundreds of them for sport. However, 1aws were established to protect the wolves from sportsmen and people who catch the animals for their fur. So the wolf population has greatly increased. Now there are so many wolves that they are destroying their own food supply.

A wolf naturally eats animals in the deer family. People in the wilderness also hunt deer for food. Many of the animals have been destroyed by the very cold winters recently and by changes in the wilderness plant life. When the deer can’t find enough food, they die.

If the wolves continue to kill large numbers of deer, their prey (猎物) will disappear some day. And the wolves will, too. So we must change the cycle of life in the wilderness to balance the ecology(生态平衡）. If we killed more wolves, we would save them and their prey from dying out. We’d also save some farm animals.

In another northern state, wolves attack cows and chickens for food. Farmers want the government to send biologists to study the problem. They believe it necessary to kill wolves in some areas and to protect them in places where there is a small wolf population.

Against Killing Wolves

If you had lived long ago, you would have heard many different stories about the dangerous wolf. According to most stories, hungry wolves often kill people for food. Even today, the stories of the “big bad wolf'” will not disappear.

But the fact is wolves are afraid of people, and they seldom travel in areas where there is a human smell. When wolves eat other animals, they usually kill the very young, or the sick and injured .The strongest survive .No kind of animal would have survived through the centuries if the weak members had lived. And has always been a law of nature.

Although some people say it is good sense to kill wolves, we say it is nonsense! Researchers have found wolves and their prey living in balance. The wolves keep the deer population from becoming too large, and that keeps a balance in the wilderness plant life.

The real problem is that the areas where wolves can live are being used by people. Even if wilderness land is not used directly for human needs, the wolves can’t always find enough food. So they travel to the nearest source, which is often a farm. Then there is danger. The“big bad wolf”has arrived! And everyone knows what happens next.

1.Some people are against killing wolves because ________.

2.According to those against killing wolves, when wolves eat other animals, ________.

3.The last sentence “And everyone knows what happens next” implies that in such cases _______.

高二英语阅读理解困难题查看答案及解析

It is reported that conservation groups in North America have been arguing about the benefits and dangers of wolves. Some groups believe wolves should be killed. Other people believe wolves must be protected so that they will not disappear from the wilderness(荒野).

For Killing Wolves

In Alaska，the wolf almost disappeared a few years ago，because hunters were killing hundreds of them for sport. However, 1aws were established to protect the wolves from sportsmen and people who catch the animals for their fur．So the wolf population has greatly increased. Now there are so many wolves that they are destroying their own food supply.

A wolf naturally eats animals in the deer family. People in the wilderness also hunt deer for food. Many of the animals have been destroyed by the very cold winters recently and by changes in the wilderness plant life．When the deer can’t find enough food，they die.

If the wolves continue to kill large numbers of deer, their prey(猎物) will disappear some day. And the wolves will, too. So we must change the cycle of life in the wilderness to balance the ecology. If we killed more wolves, we would save them and their prey from dying out. We’d also save some farm animals.

In another northern state, wolves attack cows and chickens for food. Farmers want the government to send biologists to study the problem. They believe it necessary to kill wolves in some areas and to protect them in places where there is a small wolf population．

Against Killing Wolves

If you had lived long ago，you would have heard many different stories about the dangerous wolf．According to most stories，hungry wolves often kill people for food．Even today，the stories of the “big bad wolf” will not disappear．

But the fact is wolves are afraid of people, and they seldom travel in areas where there is a human smell．When wolves eat other animals，they usually kill the very young, or the sick and injured. The strongest survive. No kind of animal would have survived through the centuries if the weak members had lived. And has always been a law of nature.

Although some people say it is good sense to kill wolves，we say it is nonsense! Researchers have found wolves and their prey living in balance．The wolves keep the deer population from becoming too large, and that keeps a balance in the wilderness plant life.

The real problem is that the areas where wolves can live are being used by people. Even if wilderness land is not used directly for human needs, the wolves can’t always find enough food. So they travel to the nearest source, which is often a farm. Then there is danger. The “big bad wolf” has arrived! And everyone knows what happens next.

1.According to the passage, some people in North America favor killing wolves for all the following reasons EXCET that ________.

A．there are too many wolves

B．they kill large numbers deer

C．they attack cows and chickens for food

D．they destroy the wilderness plant life

2.According to those against killing wolves, when wolves eat other animals, ________.

A．they never eat strong and healthy ones

B．they always go against the law of nature

C．they might help this kind of animals survive in nature

D．they disturb the ecological balance in the wilderness

3.The last sentence “And everyone knows what happens next” implies that in such cases ________.

A．farm animals will be in danger and have to be shipped away

B．wolves will kill people and people will in turn kill them

C．wolves wilI find enough food sources on famls

D．people will leave the areas where wolves can live

高二英语阅读理解中等难度题查看答案及解析

1.The soil can ________(吸收) water, so it helps to keep water from flowing away.

2.Mr. King’s son went to a ________(私立的) school last year.

3.My mum is ________ (踌躇) around not knowing how to solve the problem

4.The serious air crash killed the 250 passengers ________(在飞机上).

5.He is the only person I can ________(相信) in this company.

6.The scenery in Rio De Janeiro is really a ________(盛宴) for the eyes.

7.After the American Civil War, slavery was ________(废除).

8.Shengzhen, which is one of the earliest special economic ________(区域) in China, has become a modern city.

9.Rosa Parks was ________(逮捕) because she refused to stand up for a white man.

10.Fifty years ago, mixed-race marriages were ________(禁止).

高二英语单词拼写困难题查看答案及解析

This also keeps the air，soil，water crops________ chemicals.

A.out of        B.out from   C.free of      D.rid of

高二英语单项填空中等难度题查看答案及解析

Michael was a farmer in Texas．His parents moved to the USA from Ireland in the 1940’s， and they became very rich．Michael decided to go back to Ireland to meet his old grandfather， who was still living on the same farm．

Michael booked his ticket，flew to Shannon airport，hired a car and drove to the small village where his parents had been born．He asked for directions to the Ohagan farm，and in the end he drove up a bumpy path．He was shocked by what he saw：a small field，and in the middle of it was an old house，which looked as if it was falling down．Animals were wandering in and out of the front door，and on the porch an old man was smoking a pipe.

“Are you Mr. Ohagan?”asked Michael。

“Yes，”replied the old mall．

“I'm your grandson，Michael，”said Michael．

“A--ha，”replied the old man．

“Is this your farm?”asked Michael．

“Yes，all the way to the wall over there，”said the old man．

Michael was astonished．“Grandfather,”he said，“I have a farm in Texas．I can get into my car and drive all day and I still haven’t reached the end of the farm．”

“Yes，”said his grandfather．“I used to have a car like that．”

1.Michael’s parents _______．

2.Which of the following shocked Michael?

3.The old man _______．

4.Which of the following is TRUE?

5.From“I used to have a car like that”，we can see that________．

高二英语阅读理解简单题查看答案及解析