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Sweet wormwood （青蒿）is a common plant in China, 　 1. it has the power to cure the deadly disease called malaria （疟疾）. Tu Youyou 　 2. （be）the woman who uses the plant’s special power to save millions of lives. The Chinese scientist won a Nobel Prize because of her great contribution.

On October 5, Tu was awarded the 2015 Nobel Prize in Physiology or Medicine. She shared the prize with two other scientists from the US and Japan. Tu is the first native Chinese person 　 __3.（receive）a Nobel Prize in natural sciences.

Tu was modest about receiving the award: “It’s a success for the whole research team.” She also thinks 　 4.　 is scientists’ duty to fight for the health of all humans.

When Tu joined the national research team to find the medicine 　 5. could fight against malaria in the 1960s and 1970s, things were hard. The team didn’t have advanced equipment back then. Tu used to test 6.　 （medicine） by eating them herself. Her team searched old Chinese medicine books 　 7. hand and tested over 2,000 traditional recipes.

Once Tu 　 8.　 （return）home after traveling for six months. Her little daughter didn’t recognize her and hid from the “strange woman”. To do research, Tu also had to move around a lot.

Finally, Tu found artemisinin （青蒿素）in sweet wormwood in 1971. She spent the next decades 　 9.　 （try） to improve the medicine. According to World Health Organization, about 200 million people suffer 10. malaria around the world, and about haft a million die each year. Artemisinin is stir the most effective treatment against malaria known today.

Tu never complains about how hard she works. “I feel more rewarded when I see so many cured patients,” she said.

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China is home to over 1.3 billion people, who live in such contrasting environments as the fast-paced modern cities of Shanghai and Hong Kong, the mountains and forests in western China. So it’s little wonder 1. China has little more than 200 languages and dialects. Traditionally, Chinese languages 2. (classify) into seven groups, 3.(include) Mandarin, spoken in the north, central and western provinces. There are two versions of the　 4. (write) language. Simplified Chinese is used in mainland China and has been adopted by Singapore, Malaysia and　 5. Southeast Asian countries, while traditional Chinese is used in Taiwan, Hong Kong and Macao. More than two　 6.(three) of Chinese speak various dialects of Mandarin.

It may surprise you 7. (learn) that the term “Mandarin” is not really the name of a language. It actually refers to various Chinese dialect groups. 8. you choose to call it, Mandarin has been a powerful force for unity in a country. The total number of 9. speakers worldwide is over eight hundred million, making Mandarin 10. (widely) spoken language in the world, followed by English as the second.

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China finished construction on an emergency hospital that1.( call ) Huoshenshan Hospital. The hospital has2.area of 25,000 square meters and has 1,000 beds for　　 patients. 1,400 medical personnel from the Chinese People’s Liberation Army are staffing it. The hospital was built in Wuhan3.( battle) the new coronavirus, which has been4. (official) named COVID-19 by the World Health Organization. WHO said it chose a name that doesn’t make a5.( refer) to a location, animals or a group of people. The agency　 wanted to avoid 6.( insult) a country or people. The”CO”stands 7.　 corona, the “VI” for virus, the”D”for disease and 19 refers to 20198.the virus first emerged in December.

When9.comes to human-to-human transmission of the viruses, often it happens when someone10.( come) into contact with the infected person's secretions(分泌物), depending on how virulent(有毒的)the virus is. A cough, sneeze or handshake could cause exposure. The virus can also be transmitted by touching something an infected person has touched.

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According to Zheng Jun, Qinqiang opera is similar 　 1.　 rock’ n ’roll in many ways, and the latter is therefore the modern day Qinqiang. Rock concerts, 　 2.　 star the common people, take place by the city wall on a daily basis.

Qinqiang opera 　 3.　 (call) the “living fossil” of Chinese opera, the forefather of several　　 operas in China. 　 4.　 (Spread) to Henan, it developed into Yu opera. Judging even by today’s standards, Qinqiang opera counts as the 　 5.　 (early) Chinese rock music. The spirit of modern rock’ n ’roll　 6. (seem) to come from it.

The number of Qinqiang opera amateur 　 7. (club) in Xi’an is uncertain. At places like the City Wall Park and the South gate, you can spot groups of people enjoying the opera. Known or unknown to the group, any Qinqiang lover is welcome to sing a piece 　　 8.　 just sit down and listen. The singer presents excellent voice and emotions while the audiences get 9. (excite) by the tunes. Standing among 　 10.　 (they), you could feel the cultural pulse of this city.

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It is reported that many middle school students are just not getting enough sleep, especially during the school week. The problem seems to get　 　　　 1. (bad) as they get older. Year 7 students sleep 8.4 hours in a school night, and Year 9 students only 6.9 hours.

It’s also reported that not getting enough sleep can cause 　　　 2. ( (problem) in a student’s life. Many students fall 　　　 3. (sleep) in school or while doing their homework, so it is not　 　　　 4. (surprise) that they get lower grades than those who get enough sleep. Scientists suggest nine hours a night for middle school students.

Of the students who feel　 　　　 5.(happy) and nervous, 73% don’t get enough sleep at night.

Why aren’t students getting enough sleep? Many students have one of the　　　 6. (follow) things, like telephone, television, or computer in their bedrooms. Using them on a school night not 　　　 7. (takes their time away from homework, but also makes 　　　 8. difficult for them to sleep. As a result, many students can’t sleep before 11 p.m, yet they must get up early 　　　 9.(go) to school.

Scientists also suggest students should not do exciting activities for an hour　　　 10.　　　 bedtime.

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A bridge is a structure built 1.(cross) a river, road, valley and so on. Designs of bridges differ depending 2. the function of the bridge and the nature of the land where the bridge is constructed.

The first bridges 3.(make) of wooden logs. Most of these early bridges were poorly built and could rarely support heavy weights. It was this inadequacy that 4.(lead) to the development of better bridges. The arch was first used for bridges by the Roman Empire, some of 5. still stand today.

The oldest surviving arch stone bridge in China is the Zhaozhou Bridge, 6.date) back to the Sui Dynasty. The great bridge expert Mao Yisheng once said that 1300 years was enough to prove the completeness of its entire structure. The bridge is complex yet elegantly constructed. Taking in the whole view, you will find it a single-arch bridge. However, it is actually a vertical combination of twenty-eight 7.arch). The two smaller spans(桥拱) in the shoulders of the bridge is a 8.create) invention in the history of the bridge construction, giving the stone bridge a 9.(fair) pretty design.

This bridge will continue to stand there not only as a tourist attraction 10. a treasure for everyone to enjoy.

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Climate change is bad news for the world’s coral reefs. As global temperatures increase, the world’s glaciers melt, 1. （cause） sea levels and ocean temperatures to rise. These conditions have led to coral bleaching（白化） events, 2. the coral turns white and slowly dies, unable to survive in its changing environment.

Global sea levels 3.（expect） to rise about 1.5 feet by 2100, meaning coral reefs will be deeper underwater than they were 4.（previous）in. The deeper the coral, the less light it receives, and the less 5.（able） it has to make food. This has potential to change the entire ecosystems of reefs and the marine life they support.

But a new study from a team of 6.（researcher） at the National University of Singapore （NUS） provides a ray of hope. They studied nearly 3,000 corals from 124 species at two reefs off 7. coast of Singapore: Pulau Hantu and Raffles Lighthouse. The water where these reefs live is 8.（cloud）, murky and thick with sediment（沉淀物）.

The light reaches down about 26 feet, yet there are corals growing well 9. that level and below. They’ve adapted to surviving under the changing conditions. Researchers say it’s likely that these corals will survive sea-level rise, according to the findings 10.（publish） in the journal Marine Environmental Research.

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Aids is caused by a 1. (dead) virus called HIV, which attacks the body s immune system and there’s no cure for it When someone has Aids, the person loses the ability to fight other illnesses. The virus 2. (spread) in three ways. It can be passed on through 3. (protect) sex, through blood and from a mother to her child. Contrary to 4. many people think, HIV cannot be transmitted through mosquitoes, a cough or sneeze.

Since the disease 5. (burst) on the scene in the 1980s, it has become a serious problem around the world. According to WHO, more than 15 million children have lost their parents 6. Aids. Ajani, whose father died of Aids two years ago, lost his mother for the same reason.

China has also been affected by Aids. By the end of 2009, there were about 740,000 HTV 7. (carry) in China. Dr David Ho, a Chinese-American Aids expert, has devoted himself to 8. (bring) up-to-date technology to China’s Aids problem. UNAIDS also teaches young people how to prevent Aids, and set up treatment centers 9. mothers with HIV can receive medicine to help keep them from passing HIV on to their children.

Ajani and his sister are 10. (fortune). Because their mother had access to prescription Aids medicines when she was pregnant, they did not get HIV from her. Now their grandfather is caring for them.

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What is a classic? It can 1.(put) in the following way: When you reread a classic, you do not see more in the book than you did before: you see more in you than you did before.

A classic is a book that gives you wonderful feelings, and enables you to uncover part of the 2. (mean) of life. A classic is a book that has stood the test of time, 3. book that men and women all over the world want to keep all their lives. Not many books can stand such a test 4. (consider) all the books that have been produced, classics account for only a very small share of the total-less than 0. 001 percent. That is just a few thousand books. Under 100 5.those make up the solid core (核心).

You may ask 6. we should read the classics? I suggest three reasons: a classic opens your mind, helps you grow and helps you understand your life, your world, yourself. A classic can give you insights into yourself. 7. (certain), you can get pleasure out of almost any book. But a classic, once you go deep into it, 8. (lift) you up high! When you read classics, you'll find yourself 9. (inspire) by the thoughts and observations of the most gifted 10. (writer) in history.

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It is not unusual for people to spend two or three hours a day posting or reading posts on WeChat, to the point 1. it becomes an addiction. And it is an addiction. 2. is a chemical in your brain known as dopamine (多巴胺), which is sometimes called the “reward molecule (分子)” and 3.(it) release gives you a feeling of pleasure. For example, when you post several 4.(photo) on WeChat and get a hundred likes, you feel happy. That’s dopamine at work.

A short while ago, I lost access 5. my WeChat account, which left me with a feeling of 6.(anxious) for a few days. No doubt I missed my dopamine. And I got emails from friends 7.(wonder) if I was fine or if I was just being anti-social. But I soon began to feel 8.(true) peaceful and started to worry less about what other people 9.(do) and concentrate more on my personal life. In other words, it offered me an opportunity 10.(take) a break from social media. Someday I may re-connect with my WeChat account, but I’m not in a hurry. Life can be more relaxing and just as interesting without it.

高三英语语法填空中等难度题查看答案及解析