13．About 90 percent of the equipment presente...

About 90 percent of the equipment presented by the administration， as well as the facilities of our own， 　　　 made good use of in the teaching.

A. have   B. has   C. have been   D. has been

高三英语单项填空中等难度题查看答案及解析

13．About 90 percent of the equipment presented by the administration，as well as the facilities of our own，      ______made good use of in teaching．

高三英语单项填空简单题查看答案及解析

Most of the teaching equipment presented by the Hope Project, as well as the books,                   ______made good use of in the village school.

A．have         B．has         C．have been            D．has been

高三英语单项填空中等难度题查看答案及解析

．Most of the teaching equipment presented by the Hope Project, as well as the books,                   ______made good use of in the village school．

A．have               B．has           C．have been        D．has been

高三英语单项填空简单题查看答案及解析

Experts say farmers will need to produce about 70 percent more food by the middle of the century. They predict that 9 billion people will need to be fed worldwide by 2050. The prediction means experts will need to develop more effective farming methods that cause less harm to the environment to produce more food. Experts say living things called bacteria could help achieve that goal. A bacterium is an organism.It is so small that it can be seen only with a microscope.

Researchers are finding extremely small organisms in the ground. One gram of soil contains between 100 million and one billion bacteria. Bacteria are taking part in a healthy ex- change with the plants that share the soil. Around plant roots, bacteria change chemicals in the air and soil into food for the plants. The bacteria include the material known as fungi(真菌). Some bacteria act as bodyguards. They produce anti-bodies and other chemicals to fight harmful bacteria.

Plants make sugar through a process called photosynthesis (光合作用).This happens when a plant receiving light changes water and carbon dioxide into food. Much of the sugar is pumped down through the roots. There, it is turned into sugar-based food and released into the soil. That is done to get bacteria to help the plants grow better. Some of the organisms turn chemicals in the air and soil into food that the plants can eat.

The biosciences company Novozymes already sells one kind of fungi. It has found a way to produce it in very large quantities and offer it to farmers as.a bio-pesticide (生物农药).A bio-pesticide protects crops from animals and bacteria. If so, farmers can harvest more crops.

1.What do the experts’ statistics in paragraph 1 show?

A.Bacteria have a good effect on farming.

B.There will be more harmful bacteria in 2050.

C.There's no need to worry about the problem of future food.

D.More food will be needed to feed more people in the future.

2.What's the connection between plants and bacteria according to paragraph 3?

A.Bacteria can't live without plants. B.Plants get benefit from bacteria .

C.They make sugar cooperatively. D.They compete for more sunshine.

3.What does Novozymes do?

A.It sells crops and animals.

B.It beautifies the environment.

C.It provides farmers with materials free of charge.

D.It produces fungi as a bio-pesticide.

4.What is the best title for the text?

A.Crops of High Quality Need Developing

B.Bacteria May Help Meet Food Needs of the Future

C.A Large Quantity of Farmland Should Be Improved

D.Diseases and Pests Can Be Controlled in the Future

高三英语阅读理解中等难度题查看答案及解析

A new study warns that about thirty percent of the world's people may not have enough water by the year 2025.

A private American organization called Population Action International did the new study. It says more than three-hundred-thirty-five-million people lack enough water now. The people live in twenty-eight countries. Most of the countries are in Africa or the Middle East.

P-A-I researcher Robert Engelman says by the year 2025, about three-thousand-million people may lack water. At least 18 more countries are expected to have severe water problems. The demand for water keeps increasing. Yet the amount of water on Earth stays the same.

Mr. Engelman says the population in countries that lack water is growing faster than in other parts of the world. He says population growth in these countries will continue to increase.

The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking waters not safe. Mr. Engelman says there are problems all over the world because of diseases, such as cholera, which are carried in water. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.

The Population Action International study gives several solutions to the water problem. One way, it says, is to find ways to use water for more than one purpose. Another way is to teach people to be careful not to waste water. A third way is to use less water of agriculture.

The report also says long-term solutions to the water problem must include controls on population growth. It says countries cannot provide clean water unless they slow population growth by limiting the number of children people have.

1. 　　　　　　 are expected to have severe water problems by the year 2025.

A. 46 countries　　　　 B. 18 countries

C. 28 countries　　　　 D. No countries

2. All the following are true except　　　　　　　　 .

A. Lack of water may cause conflict between countries

B. New industries need a lot of water

C. There are solutions to the water problem

D. Egypt now has enough fresh water

3..What can be inferred from the passage?　　　 .

A. There is connection between providing clean water and slowing population growth

B. Lack of water may also result from international conflict

C. The ability of developing has nothing to do with lack of water

D. It is not known whether diseases have something to do with lack of water

4.The best title of the passage would be 　　　　　　 .

A. World Conflict　　　　　　 B. World Water Shortage

C. Diseases and Water　　　　 D. Population and Water

高三英语阅读理解中等难度题查看答案及解析

From space, the earth looks blue. This is 　　　 about seventy-one percent of its surface is covered by water.

A. why　 　　　　　　　　　 B. how 　　　　　　　　　 C. because　　 　　　　　　　　　 D.　 whether

高三英语单项填空中等难度题查看答案及解析

From space, the earth looks blue. This is 　　　 about seventy-one percent of its surface is covered by water.

A. why 　　 B. how　　 C. because　　 D. whether

高三英语单项填空中等难度题查看答案及解析

.In that country about 80 percent of the population _____ farm.

高三英语单项填空中等难度题查看答案及解析

Nearly 90 percent of the young people in our country use the Internet, but about half of them use them every day. They visit chat rooms and sending e-mails. More and more scientists has begun to wonder: Is the Internet good or bad for kid? Some of them think what it is impossible to answer that question because the Internet has so much things. What’s more, recently studies show the online world can be helpful at some ways and dangerous as well. It can be both an educational resource and hiding place for bad people.

高三英语短文改错中等难度题查看答案及解析