There has been_____ rising demand for grain a...

There has been_____ rising demand for grain as_____ industrial material in spite of the nation’s

good harvests.

A. /, an                 B. a, an                C. the, an          D. a, /

高三英语单项填空中等难度题查看答案及解析

For years, the automobile industry has been testing vehicles that use hydrogen as fuel. Now, people across the United States have had a chance to see and even drive cars that get power from hydrogen fuel cells (燃料电池).

But the hydrogen fuel cell is not a new idea. The fuel cell was first invented by Sir William Grove of Britain in 1839. Since then, many different designs, have been invented. There is one place where fuel cells are a proven technology: in space. The American space agency used fuel cells in its Apollo spaceships in the twentieth century.

The most useful fuel cell for transportation purposes is the Polymer Electrolyte Membrane, or P.E.M. fuel cell. It is simple and can operate at temperatures of sixty to eighty degrees Celsius. That is much lower than other fuel cell designs. A P.E.M. fuel cell has two sides divided by a thin membrane (膜). Hydrogen gas is forced through one side where it comes in contact with a reactive material containing the metal platinum(铂). The membrane separates the electrons(电子) from the protons(质子) in the hydrogen atoms. The protons pass through it to the other side of the fuel cell. But the electrons are captured to do work; like powering a motor. Oxygen from the air is forced into the other side of the fuel cell. There, the gas meets the protons that have passed through the membrane. They combine to form water and heat. A single fuel cell does not produce a lot of electricity. But when many fuel cells are combined, they can produce enough electricity to power a vehicle. The product of the chemical reaction that powers fuel cells is water. This makes fuel cells a very clean technology.

Hydrogen fuel cell cars have been slow to develop because of many technical problems that have to be solved. For example, it is unclear how long the membranes in P.E.M. fuel cells will last. Also, fuel cells need water for their chemical reactions. They must be designed to start easily at low temperatures and in dry climates. And smaller, less costly fuel cells must be designed before they can truly take the place of gasoline engines. Now more models of fuel cell vehicles are being tested than ever before. The threat of climate change and the high cost of oil have increased interest in these vehicles that do not cause pollution.

高三英语填空题中等难度题查看答案及解析

Online shopping is becoming ___ rising industry for China, as the country is ___home to the world's largest online population．

A．不填;the                          B．a;the

C．the;   不填                 D．a; 不填

高三英语单项填空中等难度题查看答案及解析

There has been w recent I ret id in the food service industry toward lower fat content and less sail. This trend, which was stalled by the medical community (医学界)1. a method of fighting heart has disease, has bad some unintended side 2. (effect) such as overweight and heart disease—the very the thing the medical community was trying to fight.

Eat and salt ate very important parts of a diet. They are required 3. (process) the food that we eat, to recover from injury and for several other bodily functions. When fat and salt 4. (remove) from food, the food tastes as if it is missing something. As 5. result, people will cat more food to try to make up for something missing. Even 6. (bad), the amount of fast food that people eat goes up. Fast food 7. (be) full of fat and salt; by 8. (eat) more fast food people will get more salt and fat than they need in their diet.

Having enough fat and salt in your meals will reduce the urge to snack between meals and will improve the taste of your food. However, be 9. (care) not to go to extremes. Like anything, it is possible to have too much of both,10. is not good for the health.

高三英语短文填空中等难度题查看答案及解析

阅读下面短文，在空白处填入 1个适当的单词或括号内单词的正确形式。

There has been a recent trend in the food service industry toward lower fat content and less salt. This trend, which was started by the medical community（医学界）1. a method of fighting heart disease, has had some unintended side 2. (effect) such as overweight and heart disease — the very thing the medical community was trying to fight.

Fat and salt are very important parts of a diet. They are required 3. (process) the food that we eat, to recover from injury and for several other bodily functions. When fat and salt 4. (remove) from food, the food tastes as if is missing something. As 5. result, people will eat more food to try to make up for that something missing. Even 6. (bad), the amount of fast food that people eat goes up. Fast food 7. (be) full of fat and salt; by 8. (eat) more fast food people will get more salt and fat than they need in their diet.

Having enough fat and salt in your meals will reduce the urge to snack(吃点心) between meals and will improve the taste of your food. However, be 9. (care) not to go to extremes. Like anything, it is possible to have too much of both, 10. is not good for the health.

高三英语语法填空中等难度题查看答案及解析

阅读下面短文，在空白处填入 1个适当的单词或括号内单词的正确形式。

There has been a recent trend in the food service industry toward lower fat content and less salt. This trend, which was started by the medical community（医学界）　　　　　　 a method of fighting heart disease, has had some unintended side　　　　　 (effect) such as overweight and heart disease—the very thing the medical community was trying to fight.

Fat and salt are very important parts of a diet. They are required　　　　　 (process) the food that we eat, to recover from injury and for several other bodily functions. When fat and salt　　　 64　　　 (remove) from food, the food tastes as if is missing something. As 　　　　 result, people will eat more food to try to make up for that something missing. Even 　　　　　 (bad),　 the amount of fast food that people eat goes up. Fast food 　　　　 　 (be) full of fat and salt; by 　　　　 (eat) more fast food people will get more salt and fat than they need in their diet.

Having enough fat and salt in your meals will reduce the urge to snack(吃点心) between meals and will improve the taste of your food. However, be 　　　　　 (care) not to go to extremes. Like anything, it is possible to have too much of both, 　　　　 is not good for the health.

高三英语填空题中等难度题查看答案及解析

For decades，the San Francisco Bay area has been the heart of the computer technology industry．Many of the biggest technology companies have their headquarters in the area called Silicon Valley．But the area has not always been associated with charity(慈善)．

Now，a new generation of entrepreneurs(企业家)appears to be changing Silicon Valley．One example is Marc Benioff，a donor(捐赠者)，who has called on wealthy donors to give more to their communities．He also is the founder of Salesforce．com，a computer services company in San Francisco who has helped build a children’s hospital and given millions of dollars to non-profit organizations in the city．

Money from the technology industry has also started to change the face of charity．Benjamin Soskis writes about the history and ideas behind charity in America．His articles have appeared in The Atlantic magazine and a number of major publications．He says，traditionally，donors have given after they spent much of their lives building up wealth．Usually donors are in their 70s．But an increasing number of people appearing on the list of top donors are younger than 40 years of age．Benjamin Soskis says that is something new．“There’s a whole new model that’s appearing in which people give and accumulate at the same time．”

Some of the young donors on this year's top 50 list have started to change in the way people see charity．That is especially the case in the San Francisco area，where giving money and making money appear to be coming together．“I think it's fair to say that charity is now a part of the Silicon Valley identity．”

1.What is true of Marc Benioff?

A．He joined a non-profit organization．

B．He advised donors to build hospitals．

C．He made San Francisco a city of charity．

D．He set up the company of Salesforce．com．

2.What is special about the donors of Silicon Valley?

A．They prefer to give rather than make money．

B．They give after accumulating a lot of wealth．

C．They are much younger than the usual donors．

D．They donate more money to their communities．

3.Which of the following can be the best title for the text?

A．The age of charity

B．The changing faces of charity

C．In search of new faces

D．From computer base to charity centre

高三英语阅读理解中等难度题查看答案及解析

For decades，the San Francisco Bay area has been the heart of the computer technology industry．Many of the biggest technology companies have their headquarters in the area called Silicon Valley．But the area has not always been associated with charity(慈善)．

Now，a new generation of entrepreneurs(企业家)appears to be changing Silicon Valley．One example is Marc Benioff，a donor(捐赠者)，who has called on wealthy donors to give more to their communities．He also is the founder of Salesforce．com，a computer services company in San Francisco who has helped build a children’s hospital and given millions of dollars to non-profit organizations in the city．

Money from the technology industry has also started to change the face of charity．Benjamin Soskis writes about the history and ideas behind charity in America．His articles have appeared in The Atlantic magazine and a number of major publications．He says，traditionally，donors have given after they spent much of their lives building up wealth．Usually donors are in their 70s．But an increasing number of people appearing on the list of top donors are younger than 40 years of age．Benjamin Soskis says that is something new．“There’s a whole new model that’s appearing in which people give and accumulate at the same time．”

Some of the young donors on this year's top 50 list have started to change in the way people see charity．That is especially the case in the San Francisco area，where giving money and making money appear to be coming together．“I think it's fair to say that charity is now a part of the Silicon Valley identity．”

1.What is true of Marc Benioff?

A．He joined a non-profit organization．

B．He advised donors to build hospitals．

C．He made San Francisco a city of charity．

D．He set up the company of Salesforce．com．

2.What is special about the donors of Silicon Valley?

A．They prefer to give rather than make money．

B．They give after accumulating a lot of wealth．

C．They are much younger than the usual donors．

D．They donate more money to their communities．

3.Which of the following can be the best title for the text?

A．The age of charity

B．The changing faces of charity

C．In search of new faces

D．From computer base to charity centre

高三英语阅读理解中等难度题查看答案及解析

The company _______ a rise in salary for ages but nothing has happened yet.

A. has been promising     B. had promised                C. promised                        D. promises

高三英语单项填空简单题查看答案及解析

请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入最恰当的单词。

注意：每空格1个单词。

For years, the automobile industry has been testing vehicles that use hydrogen as fuel. Now, people across the United States have had a chance to see and even drive cars that get power from hydrogen fuel cells (燃料电池).

But the hydrogen fuel cell is not a new idea. The fuel cell was first invented by Sir William Grove of Britain in 1839. Since then, many different designs, have been invented. There is one place where fuel cells are a proven technology: in space. The American space agency used fuel cells in its Apollo spaceships in the twentieth century.

The most useful fuel cell for transportation purposes is the Polymer Electrolyte Membrane, or P.E.M. fuel cell. It is simple and can operate at temperatures of sixty to eighty degrees Celsius. That is much lower than other fuel cell designs. A P.E.M. fuel cell has two sides divided by a thin membrane (膜). Hydrogen gas is forced through one side where it comes in contact with a reactive material containing the metal platinum(铂). The membrane separates the electrons(电子) from the protons(质子) in the hydrogen atoms. The protons pass through it to the other side of the fuel cell. But the electrons are captured to do work; like powering a motor. Oxygen from the air is forced into the other side of the fuel cell. There, the gas meets the protons that have passed through the membrane. They combine to form water and heat. A single fuel cell does not produce a lot of electricity. But when many fuel cells are combined, they can produce enough electricity to power a vehicle. The product of the chemical reaction that powers fuel cells is water. This makes fuel cells a very clean technology.

Hydrogen fuel cell cars have been slow to develop because of many technical problems that have to be solved. For example, it is unclear how long the membranes in P.E.M. fuel cells will last. Also, fuel cells need water for their chemical reactions. They must be designed to start easily at low temperatures and in dry climates. And smaller, less costly fuel cells must be designed before they can truly take the place of gasoline engines. Now more models of fuel cell vehicles are being tested than ever before. The threat of climate change and the high cost of oil have increased interest in these vehicles that do not cause pollution.

高三英语填空题中等难度题查看答案及解析