There are billions of people on this planet, ...

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

There might be as many as 10 million species of complex life on this planet today —— a huge number. But add up all of the complex species that ever lived and some biologists think the grand total would be about five billion. The estimate leads to an astonishing conclusion: a staggering 99% of species are not around any more. They have been driven to extinction.

More species are joining the ranks of the extinct every year. Many scientists believe we are living through an episode of remarkably rapid extinction, on a scale that has been seen only five times in the last half a billion years.

They call this current episode the sixth mass extinction —— a large, global decline in a wide variety of species over a relatively short period of time. And they tend to agree that humans are the main cause.

Over-hunting, overfishing, and human-driven habitat loss are pushing many species to the brink. In fact, we have changed the planet so much that some geologists are now suggesting that we have entered a new phase in Earth’s history; an epoch they call the ＂Anthropocene＂. By 2100, it is expected that humans will have caused the extinction of up to half of the world’s current species.

Because we are living through this extinction, it is relatively easy for us to study the driving forces behind it. But how do we determine what caused other mass die-offs that happened long ago? To do so we have to look at what archaeologists, palaeontologists, geologists and other scientists have concluded from the evidence they have gathered.

The trouble is, those scientists do not always agree with one another —— even about the most recent extinction event. As well as the five-or six- mass extinctions, there have also been many smaller extinctions.

One of these mini extinction events happened towards the end of the Pleistocene, a few tens of thousands of years ago. It is sometimes called the ＂megafaunal＂ extinction because many of the species it claimed were particularly large animals, weighing more than 97lb (44kg). However, its cause remains a debate amongst scientists.

1.What can we learn about the sixth mass extinction？

A. Humans are the main cause of it.

B. It means a global decline over a long time.

C. It occurred towards the end of the Pleistocene.

D. Scientists still disagree about the cause of it.

2.What can be inferred from the text about species？

A. 99% of species will not be around any more by 2100.

B. By the 22nd century, there will probably be about five million on this planet.

C. About eight years later we will enter what is called the ＂Anthropocene＂.

D. It is not easy for us to figure out causes behind the＂Anthropocene＂.

3.Which of the following is closest in meaning to the underlined word in the last paragraph ?

A. Land animals.　　 B. Marine life.

C. Huge animals.　　 D. Flesh-eating creatures.

高三英语完形填空困难题查看答案及解析

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 still many problems ahead of us, but by this time next year we can see light at the end of the ________.

A. battle        　　 B. day        C. road        D. tunnel

高三英语单项填空简单题查看答案及解析

There are still many problem ahead of us, but by this time next year we can see light at the end of the ________.

A. battle                 B. day                   C. road               D. tunnel

高三英语单项填空中等难度题查看答案及解析

For many of us, printed books are satisfying in ways beyond the words they contain． Billions of printed books have been published, read and saved in the 600 years since movable type was invented, so why mess with a good things?

Sony Electronics is doing just that, betting that readers will be won over by the convenience of readability of its new electronic book devices． Sony's reader, the PRS-505, can hold 160 books in its fixed memory, enough to line the shelves on a good-sized wall in the average American home． The $299 device is about the size of a paperback book, but a half-inch thick and weighs less than a pound．

The Sony book reader is revolutionary not only in its storage capacity． The font（字体） is highly readable and adjustable by size． Unlike laptop computers, you can put the Sony in your purse, read it in direct sunlight and even bookmark the pages． And you can connect it to your PC to download books．

Surprisingly, though the reader has liberated the book from paper, electronic books aren't always a bargain． For example, David Baldacci's "Stone Cold" download retails（零售） for $15．19 at the Sony site, while Amazon（卓越网） will deliver a hard copy to your mailbox for $16．19．

The Sony reader also lets you store and play or display music． So what's not to like about the Sony? Well, for many bibliophiles, a lot． Book lovers like to have, hold and keep their volumes, which don't need charging． You can write notes in the margins, and enjoy the ambience they provide on your book shelves．The need for electronic reading devices is likely to grow as more people worried about the billions of tons of paper used for printed material． Many believe the time will come when devices like the Sony reader are as common as printed newspapers and magazines today．

1.According to the passage, the Sony book reader _________．

A． is as light as a laptop computer

B． can hold more than 200 books

C． is convenient to carry around

D． cannot be connected to a PC

2.What is the author’s point when he mentions “Stone Cold”?

A． Amazon’s printed books are very cheap

B． “Stone Cold” can be got from the Sony site and Amazon

C． The Sony book reader is not very cheap to use

D． The Sony book reader can benefit its buyers a lot

3.The underlined word “bibliophiles” in Paragraph 5 refers to “__________”．

A． music lovers                                                          B． book lovers

C． electronic reading devices                                D． Sony readers

4.According to the author, what’s the future for the electronic reading devices?

A． They’ll replace printed newspapers and magazines

B． They’ll still be more expensive than printed newspapers

C． They’ll become a must in people’s daily life

D． They’ll become more popular as time goes on

高三英语阅读理解中等难度题查看答案及解析

（7）阅读理解

For many of us, printed books are satisfying in ways beyond the words they contain. Billions of printed books have been published, read and saved in the 600 years since movable type was invented, so why mess with a good things?

Sony Electronics is doing just that, betting that readers will be won over by the convenience of readability of its new electronic book devices. Sony's reader, the PRS-505, can hold 160 books in its fixed memory, enough to line the shelves on a good-sized wall in the average American home. The $299 device is about the size of a paperback book, but a half-inch thick and weighs less than a pound.

The Sony book reader is revolutionary not only in its storage capacity. The font（字体） is highly readable and adjustable by size. Unlike laptop computers, you can put the Sony in your purse, read it in direct sunlight and even bookmark the pages. And you can connect it to your PC to download books.

Surprisingly, though the reader has liberated the book from paper, electronic books aren't always a bargain. For example, David Baldacci's "Stone Cold" download retails（零售） for $15.19 at the Sony site, while Amazon（卓越网） will deliver a hard copy to your mailbox for $16.19.

The Sony reader also lets you store and play or display music. So what's not to like about the Sony? Well, for many bibliophiles, a lot. Book lovers like to have, hold and keep their volumes, which don't need charging. You can write notes in the margins, and enjoy the ambience they provide on your book shelves.

The need for electronic reading devices is likely to grow as more people worried about the billions of tons of paper used for printed material. Many believe the time will come when devices like the Sony reader are as common as printed newspapers and magazines today.

1．What would be the best title for the passage?

A. The age of the electronic book reader is coming

B. Printed books are out of date

C. The Sony reader meets many readers’ needs

D. The revolution in book readers

2．According to the passage, the Sony book reader _________.

A. is as light as a laptop computer

B. can hold more than 200 books

C. is convenient to carry around

D. cannot be connected to a PC

3．What is the author’s point when he mentions “Stone Cold”?

A. Amazon’s printed books are very cheap

B. “Stone Cold” can be got from the Sony site and Amazon

C. The Sony book reader is not very cheap to use

D. The Sony book reader can benefit its buyers a lot

4．The underlined word “bibliophiles” in Paragraph 5 refers to “__________”.

A. music lovers                                              B. book lovers

C. electronic reading devices           D. Sony readers

5．According to the author, what’s the future for the electronic reading devices?

A. They’ll replace printed newspapers and magazines

B. They’ll still be more expensive than printed newspapers

C. They’ll become a must in people’s daily life

D. They’ll become more popular as time goes on

高三英语阅读理解简单题查看答案及解析

Around the world there are many young people________a great deal of money on listening to pop or rock music.

A．spending　             B．spend

C．to spend　             D．spent

高三英语单项填空中等难度题查看答案及解析

All over the world, and for many different reasons, there are millions of people who rarely or never eat meat. These people are called vegetarians. To people who eat meat, being a vegetarian may seem like a very strange thing, diets for several different reasons.

First, vegetarians have an enormous health advantage. One of the major health problems in modern societies is not too much protein but too much fat, especially in the form of animal fats. Medical evidence suggests that animal fats, including butter, contribute to the development of cholesterol in the human body. High amount of cholesterol seem to be part of the cause of heart disease. Most vegetarians have low level of cholesterol. High amounts of animal fats also seem to lead to certain kinds of cancer, and vegetarians are typically less vulnerable to these cancers than people who eat a lot of meat. Overall, studies comparing the health of vegetarians and meat-eaters show that the meat-eaters are twice as likely to die of heart disease as vegetarians are.

Better health is one reason that people choose to become vegetarians. Another reason is religion. Some religions forbid the eating of meat. The largest of these is the Hindu religion, which has about 600 million believers in the world. Although not all Hindus are vegetarian, many are, and there are many believers of other religions such Buddhism and even some Christian religions that also do not eat meat.

Many vegetarians do not eat meat simply because they do not like the taste of it. They have no religious or philosophical reasons; they just do not like meat. Another important reason that vegetarians give for not eating meat is the health advantages that were given above. Lastly, there are many people who do not eat meat because they just do not like the idea of killing animals for food. They believe that life, all life, is valuable , and that we do not have to destroy life to feed ourselves when there are other good sources of food.

1.According to the passage, people choose to be vegetarians for the following reasons EXCEPT________.

A. they want to stay healthy

B. they are too kind to put the idea of killing animals

C. they live in areas where meat supply is not adequate

D. they should not eat meat due to their religious belief

2.Which of the following is true according to Paragraph 2 ?

A. Vegetarians enjoy a more healthy life than the meat eaters.

B. Heart disease and cancer are caused by large amounts of protein.

C. There are twice as many meat-eaters as vegetarians who die of cancer.

D. There are less health problems in modern society due to advanced medical care.

3.What does “vulnerable” mean in Paragraph 2?

A. Having low level of cholesterol.

B. Having high level of cholesterol.

C. Having weak ability to resist diseases and harms.

D. Having strong ability to resist disease and harms.

4.It can be inferred from the passage that __________.

A. being a vegetarian may be a very strange thing

B. vegetarians eat meat on some special occasions

C. all vegetarians have reasons for their not eating meat

D. most vegetarians believe that life without meat is happy.

高三英语阅读理解中等难度题查看答案及解析

There are many people________only on-line activity is sending and receiving e-mails．

A．who                 B．that                  C．which               D．whose

高三英语单项填空中等难度题查看答案及解析