选择知识点

Group exercise is one of the most effective ways to improve physical fitness and sustain（保持）a healthy lifestyle.Group exercise is challenging,yet fun!Of course everyone knows that exercise is good for the body.However,studies have shown that when exercise is performed in groups,it's not only great for improving physical health but for psychological health.It's an opportunity to be social and improve your strength.Additionally,group exercise creates a community feel and the shared common goal inspires people to work hard.
Another beneficial aspect of group exercise is the informational support people receive from the instructor.Many people fear the gym because they feel lost and don't want to embarrass themselves.If you feel that way,then group training is an even better option for you.It's a great opportunity to learn more about fitness through the clear instruction of a fitness instructor.If you're tired of wandering around the gym wasting time and becoming bored,you can attend an upbeat group fitness class that will keep your workout on track.Don't let fitness frighten you!
If you're serious about wanting to live a healthy lifestyle,it's extremely important to surround yourself with people who'll provide you with the proper emotional support.Surround yourself with people who encourage and understand you!Make fitness even more fun by trying something new or any group fitness class with a friend.Plan to go for a jog together.Then try a fun healthy restaurant or fresh juice bar!Fitness can be both fun and social!
Surrounding yourself with people who'll provide you with respect support can be very beneficial while working towards reaching health and fitness goals.First,decide to do it for yourself and work towards staying positive.Then make sure the people you surround yourself with are supportive.



The first paragraph focuses on ______ .

A. the greatest challenge of group exercise
B. the most effective way to improve physical fitness
C. the contribution of group exercise to psychological health
D. the shared common goal in performing exercise in groups

The underlined word "upbeat" in the second paragraph probably means ______ .

A. cheerful
B. average
C. serious
D. stressful

When it comes to emotional support,the author thinks it necessary ______ .

A. to sustain a colorful lifestyle
B. to party on weekends with positive people
C. to try a fun healthy restaurant regularly
D. to surround yourself with supportive people

What would be the best title for the passage？ ______

A. Seeking Support in Group Exercise
B. Supporting Health in Group Exercise
C. Improving Your Strength in Group Exercise
D. Building Up Fitness in Group Exercise

A new study shows that eating nuts and peanut butter may help prevent one form of the disease diabetes （糖尿病）.Adult-onset or Type Two diabetes affects about 135 million people around the world.The disease results when the body cannot produce or use a substance called insulin （胰岛素）.Insulin is produced in the organ （器官） called the pancreas.Insulin helps turn sugar in foods into energy.
The Journal of the American Medical Association published the findings.Scientists from the Harvard University School of Public Health in Cambridge,Massachusetts completed the research.They studied more than 83，000 women for 16 years.The women were 34 to 59 years old.None of the women had diabetes,cancer or heart disease when the study began.During the study,more than 3，000 women developed diabetes.
The women answered questions every four years between 1980 and 1996.The researchers asked what they ate,including information about nuts and nut products.Some of the women ate nuts five days a week.The size of each serving weighed about 30 grams.Or,they ate a serving of peanut butter five days each week.Other women in the study did not eat nuts or peanut butter.Those who ate nuts five times a week were more than twenty percent less likely to develop Type Two diabetes than the women who did not eat nuts.
Although the study involved only women,the researchers believe eating nuts would also be good for men.The scientists say more research is needed to confirm the findings.But the study suggests that the fats in nuts may improve the way the body makes and uses insulin.
Nuts contain magnesium,which helps balance insulin and levels of sugar in the blood.The fats in nuts also may improve the body's ability to process sugar in the blood.People who suffer from diabetes have too much sugar in their blood and urine,the body's liquid waste.



What can we learn about the women involved in the new research？ ______

A. All the women had to answer questions every week.
B. Some women were not allowed to eat nuts on purpose.
C. Some of them suffered from diabetes because of the research.
D. Women who ate nuts regularly had lower risk of having diabetes.

What do Paragraph 3 and Paragraph 4 mainly focus on？ ______

A. Who did the findings.
B. What happened to the women.
C. How the research was carried out.
D. How much nuts women should eat.

What helps prevent diabetes according to the new research about nuts？ ______

A. Insulin in nuts.
B. The fats in nuts.
C. Sugar in the blood.
D. People's urine.

What's the author's purpose by writing the passage？ ______

A. To show the importance of insulin.
B. To introduce a new study about eating nuts.
C. To introduce a new way to deal with diabetes.
D. To encourage people to eat as many nuts as possible.

Coral reefs are some of the most diverse and valuable ecosystems on Earth.Coral reefs support more species per unit area than any other marine（海洋的）environment,including about 4，000 species of fish,800 species of hard corals and hundreds of other species.Scientists estimate that there may be millions of undiscovered species living in and around reefs.This biodiversity is considered the key to finding new medicines for the 2 lst century.Many drugs are now being developed from coral reef animals and plants as possible cures for cancer,viruses,and other diseases.
Healthy coral reefs support fisheries as well as jobs and businesses through tourism and recreation.About half of all managed fisheries depend on coral reefs and related habitats for a part of their life cycles.The National Marine Fisheries Service estimates the commercial value of U.S.fisheries from coral reefs is over﹩100 million.Local economies receive billions of dollars from visitors to reefs through diving tours,recreational fishing trips,hotels,restaurants,and other businesses based near reef ecosystems.
Coral reef structures also buffer（缓冲）shorelines against 97 percent of the energy from waves,storms,and floods,helping to prevent loss of life,and property damage.When reefs are damaged or destroyed,the absence of this natural barrier can increase the damage to coastal communities from normal wave action and violent storms.Several million people live in U.S.coastal areas near coral reefs.Some coastal development is required to provide necessary infrastructure（基础设施）for coastal residents and the growing coastal tourism industry.
Despite their great economic and recreational value,coral reefs are severely threatened by pollution,disease,and habitat destruction.Once coral reefs are damaged,they are less able to support the many creatures that live on them and the communities near them.When a coral reef supports fewer fish,plants,and animals,it also loses value as a tourist destination.



Why is biodiversity important to medicines？ ______

A. It can reduce the prices of new medicines.
B. It can help make new medicines.
C. It can be used for medicines.
D. It can be used to cure diseases.

How do coral reefs protect shorelines？ ______

A. They protect people against sharks.
B. They completely avoid serious flooding.
C. They prevent people from being drowned.
D. They weaken most of the energy from waves.

What will happen if coral reefs are damaged？ ______

A. Most fish will die out.
B. There will be no large fish.
C. Coastal cities will attract fewer tourists.
D. The sea will be polluted.

What is the best title for the text？ ______

A. The Importance of Diverse Ecosystems
B. The Importance of Coral Reefs
C. The Environments of Coral Reefs
D. The Value of Biodiversity

More than a million tons a year of America's plastic rubbish are not ending up where they should.As many as 1，300 plastic grocery bags per person is landing in places such as oceans and roadways,according to a new study of U.S.
In 2016，the United States generated 46.3 million tons of plastic waste,by far the most in the world.Between 2.7% and 5.3% of that was mismanaged,according to a study in Friday's journal Science Advances. "If you took nearly 2.5 million tons of mismanaged plastic waste and dumped it on the White House lawn,it would pile as high as the Empire State Building," said Jenna Jambeck,an environmental engineering professor.
Previous studies hadn't put the United States among the 10 worst offending nations for plastic waste in oceans.That's because the U.S.Environmental Protection Agency only tracks what goes into official parts of the waste stream such as landfills（废物填埋场）and recycling centers.
"The new study provides a more realistic view of our mismanaged waste," said University of Toronto ecology professor Chelsea Rochman,who wasn't part of the study. "We consume a lot of plastic which then becomes plastic waste.We recycle very little of this material,which is a waste of resources."
"A large but hard to quantify part of the problem involves the 51% of U.S.plastic waste shipped abroad for recycling to countries that routinely mismanage waste," Law said.The situation has been converting since many countries have become more limiting about taking U.S.rubbish imports.American exports of plastic waste have declined dramatically since their peak in 2016.
The government is spending billions of dollars trying to fix the problem,with modernized recycling technology and new business models to reduce waste while urging compulsory recycled content standards for new products and packaging.
"The best thing you can do environmentally is to produce no waste at all." Jambeck said.



What can we know about the plastic waste in America？ ______

A. It is improperly dealt with.
B. It is increasing every year.
C. It is as high as a tall building.
D. It is finding its way into landfills.

What did former studies fail to focus on？ ______

A. How plastic waste is managed officially.
B. Where all plastic waste finally ends up.
C. When plastic waste reaches its peak.
D. Why all plastic waste isn't recycled.

Which of the following can replace the underlined word "converting" in paragraph 5？ ______

A. continuing
B. affecting
C. changing
D. existing

What problem might America face concerning plastic waste？ ______

A. The lack of capital for waste management.
B. The lack of modern technology.
C. The seriousness of waste.
D. The limit of waste exports.

Hollywood films have long since dominated the entertainment world --- from blockbusters（大片）that bring in huge ticket sales at the box office to the celebrated films that sweep the Oscars. But lately,Asian movies have shown they are, a force to be considered. Introducing fascinating themes and special effects,the Asian film industry is making its mark globally.
In 2019，Chinese sci-fi movie The Wandering Earth stood atop（在顶上）global box offices,earning more than ＄385 million（about 2，727 million yuan）in a week. In 2020，the South-Korean film Parasite won four Oscars at the 2020 Academy Awards,including Best International Feature Film and Best Picture and became the first Non-English-language film to win the latter category in the awards,92-year history.
As China Daily noted,these Asian movies are notable as they "not only go after local markets,but also seek to make Asian dramas more accessible to Western viewers". With the help of 3 D techniques,the special effects featured in The Wandering Earth are surprising - ranging from collapsing ice and frozen buildings to a gorgeous view of the universe. The film's visual effects are impressive and have been called a milestone in Chinese sci-fi films by foreign media. The New York Times said that with such special effects, "China has joined the global competition for sci-fi movies".
The right combination of global theme and local flavor also leads to Asian films' latest success. Parasite minors a global social problem --the gap between the rich and the poor. Yet unlike such films in the West,which are often shown in the documentary format,it was shot as a "tragicomedy" that creates humor in a film about poverty, desperation and debt.
The Wandering Earth combines a sudden global crisis and a creative solution like other sci-fi films. In Hollywood movies,telling such stories often takes the perspective of individualism,which is to show human perseverance and courage from self-salvation（自我救赎）.But The Wandering Earth focuses more on the collectivist perspective, that is, self-sacrifice for achieving greater public interest and public goals.
These movies' achievements have shown that "international audiences can actually accept things not considered as mainstream in Western culture"， Cai Gongming, president of the Beijing film company Road Pictures told China Daily. "It looks as if the momentum（势头）of Asian movies will continue to expand."



What is the text mainly about？ ______

A. The differences between Asian and Western movies.
B. The similarities of Asian and Western movies.
C. Asian movies' growing influence across the world.
D. A comparison of two Asian movies.

What can we learn about The Wandering Earth from the text？ ______

A. It shows China has taken the lead in special effects technology.
B. Its visual effects marked the development of Chinese sci-fi movies.
C. It's the first Non-English-language movie to win an Oscar for Best Picture.
D. It shows there's still room for improvement in China's sci-fi movies.

How is Parasite different from Western movies？ ______

A. It combines humor and tragic issues.
B. It was shot as a documentary.
C. It presents themes that aren't mainstream.
D. It focuses on global social problems.

What is Cai Gongming's attitude toward the future of Asian movies？ ______

A. Uncertain.
B. Cautious.
C. Worried.
D. Optimistic.

Ancient Chinese folk （民俗的） paintings and many other art styles have been passed down from generation to generation,and are still practiced in different parts of China.Here's a look at four unique Chinese folk art forms.
Chinese Opera is the traditional form of Chinese drama.According to incomplete statistics,in China there are about more than 360 kinds of operas.The most famous ones include Peking Opera,Kunqu Opera,Yueju Opera,Yuju Opera,Sichuan Opera,Fujian Opera,Hebei opera,Huangmei Opera and so on.In total there are more than 50，among which Peking Opera is the most popular in China.
Shadow Play （皮影戏） dates back to Western Han Dynasty in Shaanxi more than 1000 years ago.The moving figures,usually carved out from leather,are operated by folk artists,accompanied by music and singing.It is the world's first dubbed（配音的）motion picture art form,thus considered the "ancestor" of modern film.Today this art form is still popular in northern China.
Paper-cutting is one of the most popular traditional decorative arts in China with a long history.Paper-cutting can be seen across China and it has even developed into different local genres （流派）. They are usually used to decorate gates and windows during festivals.
The Kite was invented by Chinese people.According to legend（传说），the earliest kite in China was a wooden bird by Mo Di in the Eastern Zhou Dynasty.Later his student Lu Ban improved the tech and used bamboo as material to make a kite.Today,various kite-flying activities can be found in different regions of China.Shandong Weifang Kite Festival is held every year and attracts lots of kite lovers and travelers.



Which Chinese Opera is the most popular in China？ ______

A. Peking Opera.
B. Kunqu Opera.
C. Yueju Opera.
D. Yuju Opera.

Why is Shadow Play considered the ancestor of modern film？ ______

A. It has a history of more than 1000 years.
B. It was operated by ancient folk artists.
C. It is accompanied by music and dances on the stage.
D. It is the world's first dubbed motion picture art form.

What does the underlined word "They" in Paragraph 4 refer to？ ______

A. Popular Chinese handwriting.
B. Traditional Chinese paintings.
C. Paper-cutting art works.
D. Different local genres.

What was the earliest kite made of in China？ ______

A. Paper.
B. Wood.
C. Bamboo.
D. Leather.

What is the main topic of this article？ ______

A. Chinese folk art.
B. Chinese folk paintings.
C. Chinese operas.
D. Chinese folk plays.

With the graduation season approaching,millions of young college students are preparing to walk out of their schools and start their careers,But how will they take those first steps to transition （转变） from students to workers in today's fast-paced society？
A new show,the Shining One from Jiangsu TV，has caught the attention of young viewers who hope to learn how their peers are adjusting to this transition.It follows a group of students as they compete to be one of nine candidates who will get offers from companies in the highly-competitive securities industry.The competitors are given opportunities and challenges similar to those they may run into in real life within the industry.The show also has some observers providing comments on the competitors.
The show has become a hot talking point on social media platforms.Many viewers have said they see the show as "a guide book for young people just starting their career".It offers a glimpse into various aspects of the real world such as following one's passion,facing challenges and embracing.the spirit of cooperation.
One of the hot discussions on the show has been the debate over the importance of meeting deadlines and the pursuit（追求）of perfection.Some argued that in real life,you may have to take more time with a task to make it perfect,while others said it is more important for these green hands to submit their work on time,which is the most important rule in the professional context.
Statistics from China's Ministry of Education predict that China will see a total of 9.09 million college graduates in 2021，a new high,How to provide guidance to these graduates so that they can develop the right mindset toward work and the needs to be answered.



Why is the Shining One held for college graduates？ ______

A. To provide them with career guidance.
B. To improve their communication abilities.
C. To test their academic skills learnt at school.
D. To make them learn about securities industry.

The candidates compete in the show to ______ .

A. comment each others performance
B. finish the task with their observers
C. get a chance to work in a company
D. earn their fames through social media

Which word best describes the author's attitude to the show？ ______

A. Skeptical.
B. Objective.
C. Indifferent.
D. Subjective.

Where can the text be found？ ______

A. In a history book.
B. In a fiction novel.
C. In an art magazine.
D. In a news report.

Cycling has long been a sport where a competitive edge is pursued,often at any cost.Cycling shorts,however,were an area that technology had yet to enter.Little was added to them apart from,perhaps,some padding（垫衬） to protect a rider.
Now,however,new cycling shorts are being equipped with sensors to help riders defeat opponents easily.A British start-up has created a pair of shorts that uses electric sensors and artificial intelligence to shape and strengthen cyclists' muscles while they are moving.It plans to also adapt this product next year for joggers and people at the gym.
The shorts,created by Devon Lewis,a PhD student at the University of Southampton,are able to send out tiny electric currents into a user s muscles to improve their cycling technique.Mr Lewis,27，came up with the idea after studying a connection between the brain and muscles that sends chemical signals from motor neurons（神经元） to muscle fibres to make the muscle contract and strengthen.
The shorts,created by Mr Lewis's start-up,bypass this connection,using electric cur rents to build muscle strength directly,without relying on the brain to send out signals."We have a limited ability to control our muscles naturally," Mr Lewis said."You can control them more exactly,get more from your muscles and contract them more strongly,if you stimulate them directly with electricity." Electric wires in the shorts send out currents that activate the muscle.For those worried about getting a shock while cycling,Mr Lewis said,"It's sort of the same thing as when you have spicy food and you get that little rush.It feels strange when you first start using it but then you adapt to it quite quickly."
His idea has received support from Future Worlds,a start-up accelerator at Southampton University.The product is being shown next week at the technology conference CES，held digitally this year.



What's the strength of the newly invented cycling shorts？ ______

A. They help cyclists perform better.
B. They last longer than normal ones.
C. They can keep a balanced comfort.
D. They have tools to make good figures.

Why can the cycling shorts help the runners and joggers？ ______

A. They are made of quality cotton materials.
B. They are created by world-top designers.
C. They can make running or jogging less boring.
D. They are made intelligently with electric sensors.

What may be some people's worry about the shorts？ ______

A. They may spend more than they can afford.
B. They get little help from the new shorts.
C. They may get shocked by the electricity.
D. The new shorts can't function well enough.

What's the best title of the text？ ______

A. The Special Cycling Shorts
B. Ways to Be a Good Runner
C. How Shorts Benefit You
D. Some Tips about Running Fast

Denmark has introduced a fat-tax in order to fight obesity（肥胖症），heart disease and other serious diseases.The government wants to improve expectation of life and the health of the Danish people.Butter,potato chips,ground beef and pork are among the products that are to be taxed.After one or two years the government plans to see how the tax worked and if it has any effect on people's eating habits.Denmark already has tax on sugar and ice cream.
Although only 10% of the Danish population is overweight,the country's food experts think that fat may account for higher death rates.They also argue that the tax should not be limited to fats alone,because people might switch to other unhealthy foods with sugar and salt in them.Even if Denmark cuts the amount of fat that people consume only by a small part,it will be a signal to other countries that are watching closely,especially the European countries that are planning similar measures.Finland is working on a fat tax,based on the Danish model.Hungary has recently started to tax food that has a high share of salt,sugar and caffeine.
Denmark's fat tax is being opposed by the country's food industry,especially the meat producers.If people do cut more meat out of their diet,it may mean that farmers' earnings will decline.Denmark is one of the world's largest bacon and pork producers.On the other side,the new measure is expected to bring the government about ﹩400 million additional tax dollars a year.



What is the main purpose of the fat-tax in Denmark？ ______

A. To adapt to people's new eating habits.
B. To increase the income of the government.
C. To help people keep healthier and live longer.
D. To push farmers to change old farming mode.

It can be inferred from the passage that ______ .

A. Finland is the first to work on food tax
B. Denmark has the highest heart disease rate
C. food experts think the tax is not good enough
D. obesity rate in the Europe is surprisingly low now

What is the last paragraph mainly about？ ______

A. People's new diet after the tax.
B. The effects the tax will bring.
C. The benefits of the measure.
D. Producers' reactions to the tax.

The passage is most probably taken from ______ .

A. a food brochure
B. a marketing report
C. a research paper
D. a health magazine

Vegetarianism is growing in popularity in a lot of countries.And now,South Africa is one of them.Today,more and more South Africans are experimenting with the vegetarian（素食者）way of life by cutting meat out of their diet.
Some others are exploring veganism.Vegans（纯素者）are similar to vegetarians but they avoid all animal-based products,including milk and eggs.Some vegans even do not eat honey.There is no official count of how many vegans there are in South Africa.But the interest has led to the birth of vegetarian and vegan restaurants in Johannesburg,the nation's economic center.And this year,Africa's first big vegan and plant-based festival was held in Cape Town.The Vegan &.Plant Powered Show took place at the end of May.
But veganism can be a lonely road for many South Africans.The country is Africa's top consumer of meat from cows,pigs and sheep,based on information from the Organization for Economic Co-operation and Development.Many South Africans express shock at the thought of giving up meat,which is central to celebrations and spirituality.
This is an issue for many African vegans,including Anesu Mbizvo. "In African traditional culture,a big part of a family's worth is their livestock（家畜），which decide the wealth of a family.And so when an African kills an animal at a gathering,it's thought that he would give away his wealth. " But she adds,"Offering home-grown vegetables would not be considered to be valuable.I think that thought mainly prevents some people of African cultures from being vegans."
Some South Africans are finding their path somewhere in the middle.Thirty-one-year-old Thandiwe Ngubeni is a communications specialist.She still eats meat---but less and less of it as time goes by. "I feel more energetic when I eat a vegan meal.It actually gives me more energy."



What can we learn about vegans？ ______

A. They can drink milk.
B. They eat some animal meat.
C. They enjoy opening vegan restaurants.
D. They refuse any product based on animals.

What mainly stops some Africans being vegans according to Anesu Mbizvo？ ______

A. Too many animals in the wild.
B. Traditional views of livestock.
C. The influence from other countries.
D. Not enough vegetables in the restaurant.

What do we know about Thandiwe Ngubeni？ ______

A. She is a vegan.
B. She is an animal specialist.
C. She looks forward to eating much more meat.
D. She has a limit on the amount of meat she eats.

What can be the best title for the text？ ______

A. Vegans' Behaviors Are Too Extreme
B. Vegetarians Are Not Popular Any Longer
C. Many South Africans Welcome a Vegan Lifestyle
D. Meat in South Africa Will Become Less Delicious