Six billion people already live on our planet...

Six billion people already live on our planet, and the number is growing _____ 220,000 every day．

A．with             B．in                   C．from             D．by

高三英语单项填空中等难度题查看答案及解析

There are billions of people on this planet, and many of us love to eat meat. Can the demand be filled in a sustainable(可持续的) and affordable way? A bunch of businessmen are not only optimistic but are working to make this happen sooner than you may think.

The environmental effects caused by meat consumption (食用)—waste, animal treatment, health problems and even the greenhouse gas effects that are potentially caused by methane gas produced by cows—have given rise to a number of startups(新兴公司)looking to develop meats in different ways.

For example, San Francisco-based Memphis Meats is developing cell-based meats in its labs without requiring any animals. Israel’s Future Meat Technologies is doing the same by producing fat and muscle cells that are being tested by chefs in Jerusalem. All of these companies use special processes to harvest cells from animals and grow them in a lab.

But don’t worry if you’re not a meat lover. Startups such as Jet Eat, which is also based in Israel, are working on food products grown in labs that are plant-based and replicate (复制) meats using natural elements while still keeping flavor, consistency and the “overall sensory experience”, according to a report on NoCamels. Jet Eat, which was founded in early 2018, aims to 3D-print their lab-grown products by 2020.

As you can imagine, there are plenty of barriers facing the industry. Educating the public is a big one. Another controversial issue is the labeling of the products.　 Recently both the USDA and the Food and Drug Administration(FDA) announced that they will begin jointly controlling the new “cell-based meat” category.

Many of us have concerns about the challenges facing future generations as our global population increases and the earth’s natural resources decreases. The good news is that there are plenty of businessmen around the world—like those producing lab-grown meats—who are working to solve some of these problems and make a little money in the process. Nothing wrong with that.

1.Why do some companies begin to develop new kinds of meats?

A.To analyse the causes of air pollution.

B.To stress the importance of protecting wild animals.

C.To make people less interested in eating meat and more healthy.

D.To meet people’s demand for meat in environmentally friendly ways.

2.What’s special about the lab-grown meats of Jet Eat?

A.They cost less. B.They are plant-based.

C.They are more delicious. D.They are available on the market now.

3.Which of the following is a barrier lab-grown meat industries must deal with?

A.How to let people accept the meat. B.How to give the meat an elegant name.

C.How to produce the meat in large amounts. D.How to reduce the cost of making the meat.

4.What’s the author’s attitude towards lab-grown meats?

A.Supportive. B.Opposing. C.Ambiguous. D.Cautious.

高三英语阅读理解中等难度题查看答案及解析

Our planet is home to about seven billion people. Since the 1990s, population experts have predicted the number would grow to nine billion before it begins to slow down and possibly decrease.

But a new report predicts the world’s population is likely to increase to almost 11 billion by 2100. Based on the most modem statistical tools, the new report makes use of government records and considers expert predictions, including death rates, birthrates and international migration, or people moving across borders. The report says during the rest of this century, Africa’s population will grow from about 3.5 billion to 5.1 billion over the next 85 years.

John is director of the United Nations Population Division. He says that in the past, researchers thought population growth in Africa would be similar to that of other areas. They expected slower growth rates as birth control use became more widespread. But he says those ideas were wrong.

“The level of contraception use has continued to increase but slowly — more slowly than expected, and birthrate therefore has been falling less rapidly than expected, and the population therefore continues to grow somewhat more rapidly than we expected.

The new findings are based on a joint research project of the United Nations and the University of Washington,

The researchers believe the population of Asia will reach five billion by 2050. That is up from the current 4.4 billion. And then begin decline. The researchers also believe that North America, Europe, Latin America and the Caribbean area will have a total population of below one billion.

John says the pressure of feeding the rising population is likely to be less than that might be expected.

“The relatively good news is that the world has been winning the race between population growth and food production. If you look back historically over the last 50 years, certainly for the world as a whole and for many, most individual countries and regions, the increase in food production has outpaced the increase of population.”

1.Which area will experience the largest increase in population at the end of the century？

A. Asia.　　 B. Africa.

C. Europe.　　 D. North America.

2.“Contraception use” in the fourth paragraph refers to ________.

A. a method of expert predictions

B. a way of avoiding growth in population

C. a joint research into the rising population

D. a potential technology for food production

3.Why is the pressure of feeding the rising population less than expected according to John?

A. Expert predictions are not exactly like what the facts happen.

B. Birthrates have always been falling less rapidly than we expected.

C. The population grows less rapidly than population experts expected.

D. The increase in food production has outpaced the increase of population,

4.What can be inferred from the passage?

A. The world’s population will increase constantly.

B. The population of Asia will rise by 5 billion by 2050.

C. John is optimistic about feeding the rising population,

D. Population growth in Africa was much slower than expected.

高三英语阅读理解中等难度题查看答案及解析

Our planet is home to about seven billion people. Since the 1990s, population experts have predicted the number would grow to nine billion before it begins to slow down and possibly decrease.

But a new report predicts the world’s population is likely to increase to almost 11 billion by 2100. Based on the most modern statistical tools, the new report makes use of government records and considers expert predictions, including death rates, birthrates and international migration, or people moving across borders. The report says during the rest of this century, Africa's population will grow from about 3.5 billion to 5.1 billion over the next 85 years

John is director of the United Nations Population Division. He says that in the past, researchers thought population growth in Africa would be similar to that of other areas. They expected slower growth rates as birth control use became more widespread. But he says those ideas were wrong.

“The level of contraception use has continued to increase but slowly — more slowly than expected, and birthrate therefore has been falling less rapidly than expected, and the population therefore continues to grow somewhat more rapidly than we expected.The new findings are based on a joint research project of the United Nations and the University of Washington.

The researchers believe the population of Asia will reach five billion by 2050. That is up from the current 4.4 billion. And then begin to decline. The researchers also believe that North America, Europe, Latin America and the Caribbean area will have a total population of below one billion.

John says the pressure of feeding the rising population is likely to be less than that might be expected.

“The relatively good news is that the world has been winning the race between population growth and food production. If you look back historically over the last 50 years, certainly for the world as a whole and for many, most individual countries and regions, the increase in food production has outpaced the increase of population.‖”

1.Which area will experience the largest increase in population at the end of the century?

A. Asia.　 B. Africa. 　 C. Europe.　 D. North America.

2.“Contraception use‖ in the fourth paragraph refers to ________.

A. a method of expert predictions

B. a way of avoiding growth in population

C. a joint research into the rising population

D. a potential technology for food production

3.Why is the pressure of feeding the rising population less than expected according to John?

A. Expert predictions are not exactly like what the facts happen.

B. Birthrates have always been falling less rapidly than we expected.

C. The population grows less rapidly than population experts expected.

D. The increase in food production has outpaced the increase of population.

4.What can be inferred from the passage?

A. The world’s population will increase constantly.

B. The population of Asia will rise by 5 billion by 2050.

C. John is optimistic about feeding the rising population.

D. Population growth in Africa was much slower than expected.

高三英语阅读理解中等难度题查看答案及解析

Billions of poor people around the world 1. (depend) on the use of wood for cooking. And as they take more and more firewood from wild areas, they are destroying habitats around the world. Wood collection is one reason why many animals have become endangered.

This is 2. Dr. Metcalf spends each summer in Africa. He wants to teach women and children in villages how to cook with the sun. He helped create Solar Cookers International. It’s an organization that introduces solar cookers to developing countries 3. teaches people how to use them.

高三英语语法填空中等难度题查看答案及解析

Joshua Plotnik and his colleagues carried out the tests on six 12-45-year-old Asian elephants living in the grounds of a hotel in northern Thailand. The buckets containing the seeds were not clear enough to see through and had a lid with small holes to let the smell out. In experiments, the elephants chose the greater quantity of seeds in each pair, regardless of the quantity of seeds presented. The accuracy of the prediction was better when the difference between each pair increased.

This is thought to be the first time that an animal is able to use its sense of smell to make a simple calculation of whether one of two quantities is more or less than another-the most basic form of math.

Many animal species have shown an ability to tell apart between more and less when presented with different amounts of food. But they have used vision to discriminate. Dogs have been unable to show they can perform the same trick in tests of their abilities to smell.

For an elephant this ability could be very important. Elephants often travel long distances to find better-quality food and water, which can differ according to seasonal availability, changes to their environment, and a risk they could be attacked by humans. The best performers were able to get it right more than 80 per cent of the time.

The scientists suggest that male elephants are better at the task because they need to eat more food, making it more important that their sense of smell is keener. Males also have to sniff out females in heat over long distances in order to reproduce.

They say that while elephants do use vision, particularly in close contexts where they react to each other’s body language, they use it mainly to match their more powerful senses-hearing, smell and touch.

That elephants have a powerful sense of smell is perhaps unsurprising. They have more genes related to smell than any other animal: 2,000 compared to around 800 for a dog.

1.What special ability do elephants have?

A.Use their trunks to find different smells.

B.Distinguish between more and less food.

C.Smell the differences of food quality.

D.Per form the basic math calculation.

2.What does the underlined word “discriminate” mean?

A.Choose. B.Indicate.

C.Measure. D.Distinguish.

3.Why do elephants often travel long distances?

A.To find where the better food is.

B.To find where humans wait to attack them.

C.To find where the environment has changed.

D.To find where they can adapt to the climate.

4.What is the best title for the text?

A.Elephants can do simple math puzzles

B.Elephants can “count” with their trunks

C.Elephants can smell the quality of food

D.Elephants can use vision to communicate

高三英语阅读理解中等难度题查看答案及解析

Climate change has already begun to impact our planet in more ways than we can think.

1. Saving the environment starts with us and it is our responsibility to act against these terrible changes to preserve the planet for future generations.

Make your commute green. Millions of people drive to work every day. 2. However, the downside to this is that millions of cars emit greenhouse gases that destroy our atmosphere. There are always other options that you can utilize to make your commute to work eco-friendly. For starters, taking public transportation to work is a great way to cut out emissions. Riding your bike to work is also incredibly helpful to the environment and is a great method to get exercise.

Be more conservative with energy usage. Becoming more energy efficient is a great way to prevent pollution. 3. Make sure to turn off lights and unplug devices that you are not using anymore when you are done with them. Replace your light bulbs with energy-efficient light bulbs to help you save electricity too.

Recycle. Manufacturing plants emit a large number of greenhouse gasses per year. It is unavoidable in the production of goods that we use on a regular basis. However, a cleaner alternative would be to invest in recycling. 4. The professionals will take these items to a processing plant where they will be remade into other recyclable materials again.

5. Focusing your efforts to spread awareness about renewable energy is the best way to create a positive impact in your community. By informing others about how renewable energy is better than fossil fuels (化石燃料), you will persuade others into investing in the idea.

A.Educate yourself and others.

B.Encourage the use of renewable energies.

C.It’s simply unavoidable in our modern-day society.

D.Be sure to collect your abandoned paper, plastic and electronics.

E.Fortunately, there are always things we can do to fight against it.

F.This requires you to cut down on energy usage in your household.

G.Recycling is a cost-effective and eco-friendly process that eliminates waste.

高三英语七选五中等难度题查看答案及解析

The people below all want to go on a short trip and there are descriptions of six trips which a ferry company is offering.

1. Ray and three of his friends would like to spend a whole weekend driving around in nice scenery and enjoying some local food.

2. Phil and Adam want to go on a comfortable trip which takes them quickly to an interesting city. Then they want to enjoy at least two days of sightseeing.

3. Mike, Kathy and their three children don’t have much money, but they want a special day out this Saturday. They must be back home by 9 p.m.

4. Kirsten is a Dutch student who is studying in Scotland. She doesn’t drive, but wants a day trip to see some beautiful scenery and spend a little time by the sea.

5. Clare and Robert want to enjoy some good food, but would also like to give their two young children a day to remember. They don’t mind if they spend a lot of money.

高三英语信息匹配简单题查看答案及解析

Beneath our feet_____ that our lives depend on for food and clothing.

A. lies the earth    B. lay the earth    C. the earth lies    D. does the earth lie

高三英语单项填空困难题查看答案及解析

More than 1.5 billion people around the world live without electricity. Finding better ways to bring light to the poor is the goal of researchers like Professor Irvine. In the late 1990s, he was working in Nepal when his return flight was canceled. A delay gave him time to take a fourteen-day hiking trip in the Himalayas.

One day he looked in the window of a school and noticed how dark it was. This is a common problem for millions of children around the world. Many families use kerosene oil (煤油) lamps. There are many problems with these lamps. They produce only a small amount of light. They are dangerous to breathe. And they are a big fire danger, causing many injuries and deaths each year. Kerosene costs less than other forms of lighting, but it is still costly in poor countries. Professor Irvine says many people spend over 100 dollars a year on the fuel.

When he returned to Canada, he began researching ways to provide safe and clean lighting. He began experimenting with light-emitting diodes (发光二极管), LEDs, at his lab. As a professor of renewable energy, he already knew about the technology. Light-emitting diodes are small glass lamps that use much less electricity than traditional bulbs (灯泡) and last much longer. He used a one-watt bright white LED made in Japan. He found it on the Internet and connected it to a bicycle-powered generator (发电机). He remembers thinking it was so bright that a child could read by the light of a single diode.

In 2000, after much research and many experiments, he returned to Nepal to put the systems into homes. Now the homes of 25,000 people in 51 countries have been equipped with it. “The one-time cost of our system which basically lives forever, as well as the solar panel — is less than one hundred dollars. So, one year of kerosene would pay for a solid-state lighting system,” he said. Now his aim is to develop a lower-cost lighting system. In January, Irvine is leaving the University of Calgary. He has also decided to start his own company in India.

1.We can learn from the second paragraph that kerosene oil lamps ______.

A. cost more than other forms of lighting

B. have damaged children’s eyesight

C. have wasted only a little fuel

D. have a lot of disadvantages

2.Irvine connected a white LED to a bicycle-powered generator to prove ______.

A. whether it can work without electricity

B. whether it can work well with less electricity

C. whether it can last longer than a generator

D. whether it is brighter than a traditional bulb

3.We can learn from the text that Irvine ______.

A. likes India rather than Nepal

B. is good at making new kinds of bulbs

C. is giving up his job in the university

D. is to earn much money from his company

高三英语阅读理解中等难度题查看答案及解析