Ever since the beginning of human civilizatio...

Ever since the beginning of human civilization, we are trying to reduce manual efforts by making simple to extremely complex machines. The next step in the same process is robotics and automation. Robotics and automation is a field with abundant potential. It expands its scope from household applications to solving mysteries of the Universe to curing untreatable medical conditions.

Up until the beginning of 2020, robots of any kind are made up of nor-living materials. Recently scientists from the University of Vermont & Tufts University introduced Xenobots, which have opened a whole new Universe for this field. Xenobots are the world’s first living and self-healing microbots. These robots are designed with the help of computer-generated- evolutionary algorithm(算法). The living cells used for its creation are skin, heart and stem cell from the African frog embryos(胚胎).

These microbots are very basic in nature, made up entirely from the organic substance. They can move forward, turn around, spin in circles and flip over. They are smaller than a millimetre and can travel inside the human body. Just imagine the possibilities we will have, once scientist is able to teach Xenobots to do the desired task. One day they even might be able to fight cancer cells. They will be able to clear microplastics in the oceans and lots more.

But if these bots are a life form, why are we calling them robots? This is because scientists are designing them to move or work according to their wills. A certain arrangement for skin and heart cells in an Xenobot will make it move in a straight line, while a different arrangement of the same cells will be required to move them in circular motions.

Xenobots are positively a great step. Scientists are also calling them a brand new life form on the planet. The future is unseen but is undoubtedly full of countless possibilities.

1.Which of the following is the potential of the robotics?

A.Making complex machines. B.Reducing manual efforts.

C.Expanding our scopes. D.Clearing space mysteries.

2.Where do Xenobots differ from the other previous robots?

A.In nature. B.In size. C.In movement. D.In materials.

3.What are Xenobots able to do already now?

A.Travel inside the human body. B.Create new life.

C.Fight cancer cells. D.Clear microplastics in the oceans.

4.What is the author’s attitude towards the future of Xenobots?

A.Doubtful. B.Positive. C.Ambiguous. D.Disapproving.

高三英语阅读理解中等难度题查看答案及解析

Humankind has tried to improve its standard of living since the very beginning of civilization. Back then, as well as today, providing food and security was the basic task for a person. However, nowadays the range of required goods has expanded significantly. People feel the need for not only some primary things, such as a piece of bread and a roof over their heads, but also for various facilities and luxuries. Providing humanity with these things is connected to the use of natural resources, which requires energy. In turn, the common sources of energy we use today cause pollution, so economic growth is almost inevitably(必然地) associated with environmental damage.

Economic growth is the increase in numbers of goods and services produced over time by an economy, and it's calculated in terms of real Gross Domestic Product（GDP）. Before growth is calculated, inflation （通货膨胀） is adjusted in order to take into account its misleading effect on the price of goods and services. Economic growth can also be explained as the increase in expected output, which results from an increase in actual output, or total demand.

There are certain aspects of economic growth which affect the environment. The first of these is the fact that in order to produce more goods and products, at a faster rate, the construction of large industrial plants is required. These plants produce a lot of waste, leading to the pollution of water and the atmosphere, which may cause negative long term health effects to nearby populations of animals, or people. They also lead to global warming.

Industrial manufacturing leads to the constantly increasing energy consumption. The traditional energy sources, which are commonly used nowadays, are considered to be the greatest polluters to the environment. There also exist so-called eco-friendly sources of energy. They are sometimes preferred but replacing the traditional sources with them also requires time, during which people have to make some sacrifices to support these undertakings.

In order to produce economically practical energy, a sometimes significant transformation of the natural site is often inevitable（必然的，不可避免的）. This is expensive and, has harmful effects on the environment. Application of wind energy would block airflows' natural speed, which is the reason for their decrease in strength, after crossing the windmill. Consequently, the pressure balance that is brought about by this current will be affected, and it is important to remember that the environment and weather conditions are directly affected by atmospheric pressure.

For these reasons, bringing about economic growth without any resulting environmental damage, whatsoever, is impossible.

1.What does the passage mainly talk about?

A. Pollution caused by plant construction

B. Effects of windmills on the environment

C. Economic growth and human civilization

D. Economic growth and environmental damage

2.What does the underlined word "They" in the third paragraph refer to?

A. Goods and products　　 B. The industrial plants

C. Water and atmosphere　 D. Negative health effects

3.According to the passage, the author holds the opinion that ____.

A. economic growth should be calculated in terms of GDP

B. use of natural resources causes no damage to the environment

C. industrial manufacturing may cause damage to the environment

D. a windmill is a perfect way to produce economically practical energy

4.Which of the following shows the structure of the passage?

高三英语阅读理解中等难度题查看答案及解析

Humankind has tried to improve its standard of living since the very beginning of civilization. Back then, as well as today, providing food and security was the basic task for a person. However, nowadays the range of required goods has expanded significantly. People feel the need for not only some primary things, such as a piece of bread and a roof over their heads, but also for various facilities and luxuries. Providing humanity with these things is connected to the use of natural resources, which requires energy. In turn, the common sources of energy we use today cause pollution, so economic growth is almost unavoidably associated with environmental damage.

Economic growth is the increase in numbers of goods and services produced over time by an economy, and it is calculated in terms of real Gross Domestic Product (GDP). Before growth is calculated, inflation (通货膨胀)is adjusted in order to take into account its mis­leading effect on the price of goods and services. Economic growth can also be explained as the increase in expected output, which results from an increase in actual output, or total de­mand.

There are certain aspects of economic growth which affect the environment. The first of these is the fact that in order to produce more goods and products, at a faster rate, the construction of large industrial plants is required. These plants produce a lot of waste, leading to the pollution of water and the atmosphere, which may cause negative long term health effects to nearby populations of animals, or people. They also lead to global warming.

Industrial manufacturing leads to the constantly increasing energy consumption. The traditional energy sources, which are commonly used nowadays, are considered to be the greatest polluters to the environment. There also exist so-called eco-friendly sources of energy. They are sometimes preferred but replacing the traditional sources with them also requires time, during which people have to make some sacrifices to support these undertakings.

In order to produce economically practical energy, a sometimes significant transformation of the natural site is often inevitable. This is expensive and, has harmful effects on the environment. Application of wind energy would block airflows’ natural speed which is the reason for their decrease in strength, after crossing the windmill. Consequently, the pres­sure balance that is brought about by this current will be affected, and it is important to re­member that the environment and weather conditions are directly affected by atmospheric pressure.

For these reasons, bringing about economic growth without any resulting environmental damage, whatsoever, is impossible.

1.What does the passage mainly talk about?

A． Pollution caused by plant construction.

B． Effects of windmills on the environment.

C． Economic growth and human civilization.

D． Economic growth and environmental damage.

2.What does the underlined word “They” in the third paragraph refer to?

A．Goods and products                     B．The industrial plants

C．Water and atmosphere                   D．Negative health effects

3.According to the passage, the author holds the opinion that ______.

A． economic growth should be calculated in terms of GDP

B． use of natural resources causes no damage to the environment

C． industrial manufacturing may cause damage to the environment

D． a windmill is a perfect way to produce economically practical energy

4.Which of the following shows the structure of the passage?

高三英语阅读理解中等难度题查看答案及解析

She ______ on a new novel ever since this summer and it is supposed to ______ at the beginning of 2011.

高三英语单项填空中等难度题查看答案及解析

John Muir once said, “Thousands of tired, nerve-shaken, over-civilized people are beginning to find out that going to the mountains is going home; that wilderness is a necessity.” With the right knowledge, skill set and equipment, you’ll have a nice experience if you want to live in the wild. But remember, safety first. 1.

Figure out the course of action suitable for your environment. Ask yourself these questions first: 2. How many supplies would you need to start with? Do you have the skills to survive in the climate you’re considering?

Practice “survival techniques” at home before you need them. For example, learn how to make fire without matches or lighters, which is very necessary in the wild.3..

4.Bring the right clothes and practical items like rope, knives, netting, lantern and flashlights, dried food, some medicine, water filter, compass and Map of Area, blankets, mirrors, axe, radio, whistle, tool and sewing kit, etc.

Consider taking classes before you leave. You re best off if you have some types of training before you set off to your dreaming Mother Nature. 5.. Also, learn to be calm when emergency happens.

A.Work out a supply list.

B.The following tips may be helpful.

C.Where will you choose to set up your camp?

D.Living in the city is much safer.

E.You need to lean some basic knowledge of first aid.

F.Being alone in the wilderness means that you’ll live your own life.

G.Consider doing some crazy things, like learning to eat insects for survival.

高三英语七选五困难题查看答案及解析

We ________ you ever since you sent us the fax informing us of your date of arrival.

高三英语单项填空简单题查看答案及解析

Agriculture plays an essential role in the rise of the human civilization. Even though agriculture is contributing to employment of a significant part of the population in majority nations, over the years, the percentage of workers has witnessed a steep decline. According to world-wide estimations, not even five percentage of the population in rich nations is employed in the agricultural sector.

Agriculture is still the backbone of the economy in several nations of Africa. According to data released by the World Bank in 2017, the top ten countries where agriculture plays a vital role in employment are in Africa. Burundi, the landlocked nation on the eastern side of the continent, has 91% of its population dependent on it. However, only 15% of the total agricultural production goes to the market. Sweet potatoes, beans, bananas and corn, are some major crops produced on the land.

The second largest employment in agriculture was also registered in an African country； Chad with 87% population working on the field. Other nations which follow on the list are： Somalia, Central African Republic, Malawi, Eritrea, Guinea-Bissau, Democratic Republic of the Congo, Niger, Mauritania, Madagascar and Mozambique. Amid the developing countries of BRICS, it is India where more people are employed by agriculture. The agriculture in India can be traced back to the era of Indus Valley Civilization. By 2017, 43 % of the Indian population is dependent on the agriculture sector for employment.

Meanwhile, many developed countries witness less than 15 percent of their population engaged in the agriculture sector. These nations include Greece, Malaysia, Russia, New Zealand, the United States, the United Kingdom, Germany, Canada, Australia, France, Italy, Japan, Saudi Arabia, South Africa, and many others. At the bottom of the list stand United Arab Emirates , Singapore and Hong Kong, with 0 % of its people employed in agriculture.

1.What does the writer want to highlight in the first paragraph?

A.Agriculture is the foundation of civilization.

B.Agriculture is the main sector of employment.

C.Agriculture is the backbone of the economy.

D.The agricultural population is in sharp decline.

2.Most part of the agricultural produce in Burundi ________.

A.is for family use B.goes to the market

C.is used for export D.goes to the government

3.Where does Central African Republic rank in employment in agriculture in the world?

A.Second. B.Third.

C.Fourth. D.Fifth.

4.We can infer from the text that the larger population in agriculture ________.

A.the more developed the country B.the less developed the economy

C.the more advanced the civilization D.the longer the history of a country

高三英语阅读理解中等难度题查看答案及解析

Human beings are the most intelligent of all animals because we are gifted with the ability to think and reason logically. Scientists and even common people with special intelligence have made a lot of inventions and contributions to modern lifestyle in the past. “Houses” have been the most popular area for discoveries and inventions in the past and even now.

Many household items have been the result of inventions of people who desired better functioning of the existent products. Every individual has intelligence and if it is used properly for the right purpose it leads to invention of a new tool or device. Many new household inventions are made almost every day and there are specific companies, which particularly keep a record of all these inventions.

A lot of inventions have been made recently in the household field. These products are patented(专利的)and have trade mark licenses(许可). The patented sliding cinch is a very simple but effective method to prevent shoulder stress and injury for those who work before computers all day long. Vanity PC is a type of computer furniture that specifically hides all the computer wires and keeps a clean and good look. All the outdoor dust, mud and snow can be kept out of the house by installing(安装)the dirt drain(排水管)at the entrance of the door. Another important invention is the automatic toilet night-light, in which a small light starts when the lid of the toilet seat is opened and closes as soon as the lid is closed.

These are some of the new household inventions invented mostly by common people. Thus, a variety of new household items are invented every day, which helps in a better functioning of household chores and in a more useful manner.

1.The first paragraph tells us the importance of _________.

A. the particular changes in houses

B. human beings’ role in making inventions

C. the advantages of modern lifestyle

D. the difference between human beings and animals

2.What plays the most important role in causing people to invent new things?

A. To earn more money and gain awards.

B. To be recorded by some special companies.

C. To improve the present living conditions.

D. To meet the new demands of new science.

3.It can be inferred that the sliding cinch is used to _________.

A. prevent your shoulder from being over-pressured

B. keep your shoulder safe and sound when you are in an accident or an operation

C. help you practice your shoulder more often and reduce shoulder pains

D. cover your shoulder and make it stronger to resist the outside strike

4.Common people can also make good inventions because __________.

A. wisdom and inspiration sometimes come from everyday life

B. some inventions are easy to be made and can be mastered by common people

C. common people have a strong desire to do something for science research

D. success is often connected with hardship and bitter experience of common people

5.The passage is mainly talking about _________.

A. the correct use of household facilities

B. different ideas about household inventions

C. the history of household inventions

D. household inventions and their influence

高三英语阅读理解中等难度题查看答案及解析

Human beings are the most intelligent of all animals because we are gifted with the ability to think and reason logically.Scientists and even common people with special intelligence have made a lot of inventions and contributions to modern lifestyle in the past.“Houses” have been the most popular area for discoveries and inventions in the past and even now.

Many household items have been the result of inventions of people who desired better functioning of the existent products.Every individual has intelligence and if it is used properly for the right purpose it leads to invention of a new tool or device.Many new household inventions are made almost every day and there are specific companies，which particularly keep a record of all these inventions.

A lot of inventions have been made recently in the household field.These products are patented (专利) and have trade mark licenses.The patented sliding cinch is a very simple but effective method to prevent shoulder stress and injury for those who work before computers all day long.Vanity PC is a type of computer furniture that specifically hides all the computer wires and keeps a clean and good look.All the outdoor dust，mud and snow can be kept out of the house by installing (安装) the dirt drain (排水管) at the entrance of the door.Another important invention is the automatic toilet night­light，in which a small light starts when the lid of the toilet seat is opened and closes as soon as the lid is closed.

These are some of the new household inventions invented mostly by common people.Thus，a variety of new household items are invented every day，which helps in a better functioning of household chores and in a more useful manner.

1.The first paragraph is intended to________.

A．stress the importance of inventions

B．introduce the topic of the article

C．show the advantages of modern lifestyle

D．tell the differences between human beings and animals

2.According to the passage，people make house inventions to________.

A．earn more money and gain awards

B．accumulate their wealth

C．improve the present living conditions

D．meet the new demands of new science

3.It can be inferred that the sliding cinch is used to________.

A．prevent your shoulder from being over­pressured

B．keep your shoulder safe and sound in an accident or an operation

C．help you practice your shoulder more often and reduce shoulder pains

D．cover your shoulder and make it stronger to resist the outside strike

4.Common people can also make good inventions because________.

A．wisdom and inspiration sometimes come from everyday life

B．some inventions are easy to be made and can be mastered by them

C．they have a strong desire to do something for science research

D．success is often connected with hardship and bitter experience of common people

5.The passage mainly talks about________.

A．the correct use of household facilities

B．different ideas about household inventions

C．the history of household inventions

D．household inventions and their influence

高三英语阅读理解中等难度题查看答案及解析

Human beings are the most intelligent of all animals because we are gifted with the ability to think and reason logically. Scientists and even common people with special intelligence have made a lot of inventions and contributions to modern lifestyle in the past. “Houses” have been the most popular area for discoveries and inventions in the past and even now.

Many household items have been the result of inventions of people who desired better functioning of the existent products. Every individual has intelligence and if it is used properly for the right purpose it leads to invention of a new tool or device. Many new household inventions are made almost every day and there are specific companies, which particularly keep a record of all these inventions.

A lot of inventions have been made recently in the household field. These products are patented(专利的)and have trade mark licenses(许可). The patented sliding cinch is a very simple but effective method to prevent shoulder stress and injury for those who work before computers all day long. Vanity PC is a type of computer furniture that specifically hides all the computer wires and keeps a clean and good look. All the outdoor dust, mud and snow can be kept out of the house by installing(安装)the dirt drain(排水管)at the entrance of the door. Another important invention is the automatic toilet night-light, in which a small light starts when the lid of the toilet seat is opened and closes as soon as the lid is closed.

These are some of the new household inventions invented mostly by common people. Thus, a variety of new household items are invented every day, which helps in a better functioning of household chores and in a more useful manner.

1.The first paragraph tells us the importance of _________.

A．the particular changes in houses

B．human beings’ role in making inventions

C．the advantages of modern lifestyle

D．the difference between human beings and animals

2.What plays the most important role in causing people to invent new things?

A．To earn more money and gain awards.

B．To be recorded by some special companies.

C．To improve the present living conditions.

D．To meet the new demands of new science.

3.It can be inferred that the sliding cinch is used to _________.

A．prevent your shoulder from being over-pressured

B．keep your shoulder safe and sound when you are in an accident or an operation

C．help you practice your shoulder more often and reduce shoulder pains

D．cover your shoulder and make it stronger to resist the outside strike

4.Common people can also make good inventions because __________.

A．wisdom and inspiration sometimes come from everyday life

B．some inventions are easy to be made and can be mastered by common people

C．common people have a strong desire to do something for science research

D．success is often connected with hardship and bitter experience of common people

5.The passage is mainly talking about _________.

A．the correct use of household facilities

B．different ideas about household inventions

C．the history of household inventions

D．household inventions and their influence

高三英语阅读理解中等难度题查看答案及解析