The most effective way 【1】(fight) global warming is to plant lots of trees, a study has said. And there is enough space for new trees to cover 3.5 million square miles, Swiss 【2】(scientist) reported in Science. That area is roughly the size 【3】the United States.

The study calculated that over the decades, those new trees could suck up nearly 830 billion tons of heat-trapping carbon dioxide (CO2) from the atmosphere. That’s about as much carbon pollution 【4】humans have caused in the past 25 years.

Six nations with the most room for new trees 【5】(be) Russia, the United States, Canada, Australia, Brazil and China.

Study co-author Thomas Crowther 【6】(figure) that there were other more effective ways besides 【7】(cut) emissions ( 排放物 ), such as people switching from meat-eating to vegetarianism. But, he said, tree planting was by far the cheapest climate change solution.

Thomas Lovejoy, a George Mason University conservation biologist, called it “a good news story” because planting trees would also help promote the 【8】(protect) of biodiversity.

“It is not easy or realistic to think the world will suddenly start planting trees everywhere, although many groups have started,” Crowther said. “It’s 【9】(certain) a monumental challenge, 【10】 is exactly what people are saying about the problem of climate change.”

There are three children in Bryant’s family. Kobe Bryant is the 【1】 (young) child and only son of Joe and Pam Bryant. His parents named him 【2】 a kind of steak: the famous beef of Kobe, Japan, which they saw on a restaurant menu. At 【3】 age of six, Kobe, his parents and two older sisters moved to Italy, 【4】 his father began playing professional basketball. He became accustomed to the lifestyle and became fluent in 【5】 (Italy). At an early age, he learned to play soccer and his favorite team was AC Milan. Bryant once said that if he 【6】(stay)in Italy, he would have 【7】(stick)with soccer and would have tried to become a professional soccer player. In 1991, the Bryants moved back to the United States. In the Philadelphia suburb of lower Merion high school, a spectacular high school career brought national 【8】(recognize). Although his SAT score of 1080 guaranteed him various basketball scholarships from top universities, the 17-year-old made a controversial 【9】 (decide)to enter the NBA 【10】 (direct).

【1】Educators spend a good deal of time searching for learning resources and are in a position to be approached by educational publishers and software developers. Educators may use open source material from well-known universities like Harvard and MIT or offer learning resources from independent publishers to their students.

While there are a variety of learning resources for all education levels, early-childhood learning resources are probably the most common. A wide range of websites, software and mobile applications are aimed at children and serve as learning resources in math, reading, science, writing, etc. 【2】

Learning resources for students in high school and college are also abundant. 【3】While there may be a large number of websites and computer applications that serve as an ancillary (辅助的) resource for a given subject, a teacher may recommend a reference book, biography, or literary work as a resource relevant to the specific area of study.

Many learning resources are designed to reinforce (充实) material taught in the class or simply provide additional help for struggling students. 【4】The American Disability Act provides the requirements for educational resources for disabled students in the United States, just as the Special Educational Needs and Disability Act in the UK provides for its special needs students.

【5】Libraries, teachers and other educators, higher learning institutions, and the Internet are all excellent sources for learning resources in nearly every area of study and educational development.

A.Learning resources help teachers save preparation time.

B.Discovering learning resources for students is not difficult.

C.Many of these products are used in classrooms across the globe.

D.But there are also learning resources for students with disabilities.

E.Students can’t learn from one type of instructional material alone.

F.Teachers and professors are the leading experts on learning resources.

G.They often consist of a balance of technology and traditional textbooks.

Like Li, many of the tens of millions of residents in Shanghai have been complaining recently that the introduction of compulsory household garbage sorting is making life difficult, but at the same time have been having to learn to do it.

Calls for garbage sorting have brought little progress in China in the past decade, but Shanghai is leading a fresh start for the world’s second-largest waste producer. “If we say China is now classifying its waste, then it’s Shanghai that is really doing it,” said Chen Liwen, an environmentalist who has devoted herself to waste classification for the past decade. “It’s starting late, compared with the US or Japan, but if it’s successful in such a big city with such a huge population, it will mean a lot for the world,” she said. While the measures force a change of habits for most people, they bring opportunities for some. Du Huanzheng, director of the Recycling Economy Institute at Tongji University, said waste sorting was important for China’s recycling industry. “Without proper classification, a lot of garbage that can be recycled is burned, and that’s a pity,” he said. “After being classified, things suitable to be stored and transported can now be recycled.” Besides, prices of small sortable garbage cans for home use have increased on e-commerce (电子商务) platforms, while garbage can makers are also developing smart models in response to new needs. What’s more, garbage sorting is also an important part of a country’s soft power. “For China, it is an opportunity to improve its international reputation. However, it is a long process that requires effort from government, enterprises and individuals (个人),” Du said.

【1】What do the underlined words “doing so” in Paragraph 1 refer to?

A.Packaging fruit with plastic film.

B.Selling rotten fruit to customers.

C.Throwing rotten fruit into a garbage can.

D.Throwing fruit and its packaging into the same garbage can.

【2】What does the author want to show by writing Paragraph 2?

A.The new garbage sorting rules in Shanghai are strict.

B.Garbage sorting puts Shanghai residents into trouble.

C.It is not easy to learn how to sort garbage.

D.It’s necessary to sort garbage in Shanghai.

【3】What is Chen Liwen’s attitude towards garbage sorting in China?

A.Hopeful.B.Doubtful.

C.Uninterested.D.Worried.

【4】Which of the following is mentioned as a benefit of garbage sorting?

A.It helps reduce the burden of individuals.

B.It makes smart garbage cans affordable.

C.It helps improve China’s hard power.

D.It avoids recyclable things being burned.

William Shakespeare was one of the famous English 【1】 (write). He mostly wrote plays and special poems. Those poems 【2】 (call) sonnets (十四行诗), and they have a unique pattern. Besides, they aren’t easy to write. That didn’t stop scientists, though. One team just trained a computer to write poetry like Shakespeare’s. They entered nearly 3,000 sonnets into their machine. Those included the 154 sonnets that Shakespeare created. After that, they used a special program. It emphasized the rules of poetry and made sure the machine followed 【3】 (they). Through AI, the computer is able to put out sonnets. They are so good that they 【4】 (fool) humans. Ordinary readers couldn’t tell whether a person or a machine wrote them. That doesn't mean they are perfect, though.

There are things floating around in the air. Most of them, you can not even see. They are a kind of air pollution called particles or particulate matter. In fact, particulate matter may be the air pollutant that most commonly affects people’s health.

Have a Look.

Particles can come in almost any shape or size, and can be solid particles or liquid droplets.【1】 These two groups differ in many ways. One of the differences is size, we call the bigger particles PM 10 and we call the smaller particles PM 2.5.

BIG.

The big particles are between 2.5 and 10 micrometers (from about 25 to 100 times thinner than a human hair). These particles are called PM 10 (we say ―PM ten, which stands for Particulate Matter up to 10 micrometers in size).【2】

SMALL.

The small particles are smaller than 2.5 micrometers (100 times thinner than a human hair).【3】We say ―PM two point five, as in Particulate Matter up to 2.5 micrometers in size.The smaller particles are lighter and they stay in the air longer and travel farther. PM 10 particles can stay in the air for minutes or hours while PM 2.5 particles can stay in the air for days or weeks.And travel? 【4】 PM 2.5 particles go even farther; many hundreds of miles.

Particulate Matter and Your Health.

When you breathe, you take in the air along with any particles in the air, like heavy metal sand cancer causing organic compounds. Both PM 10 and PM 2.5 particles can cause health problems, specifically respiratory (呼吸的) health.【5】 Exposure to particulate matter leads to increased use of medication and more visits to the doctor or emergency room.

A.These particles are called PM 2.5.

B.We divide particles into two major groups.

C.These particles cause less severe health effects.

D.PM 10 particles can travel as much as 30 miles.

E.Air pollution is a growing problem in the whole world.

F.PM 2.5 can have worse health effects than the bigger PM 10.

G.Air pollutants have great effects on our environment and our health.

How can horses find their way back from a strange environment? For most people, that would be impossible without a map. Horses have a special system in their brains, and it works just 【1】 GPS. It shows signs for trees and other objects in their home areas. It also takes notes of new things in new areas. 【2】 horses keep their attention on those signs, they know which directions 【3】 (go). Who needs a self-driving car when you can have a horse? You’ll always get home safe and sound.

Founded in 2002, the China Baseball League (CBL) is China’s professional league for the sport, with seven teams around the country. The opportunity to capture a huge new market with China’s growing interest saw the US Major League Baseball (MLB) open its first China office in Beijing in 2007, which has since then developed the Chinese market and educated young athletes.An example is the youth baseball program Play Ball in major Chinese cities. In the same year, the CBL partnered with Japan’s Nippon Professional Baseball (NPB), agreeing to allow Japanese clubs to send coaches and players to China and Chinese players to train at Japanese facilities. This program helps Chinese schools integrate baseball into their physical education curriculum, build professional development centers. More and more Chinese youths are getting involved with the sport, taking baseball class on the weekends or after school. Many programs for children have been established and often hold classes at many baseball fields.

Through these different partnerships and co-operations, China has created opportunities for the citizens to experience another culture. China might just be the future of baseball. Through heavy investments since 2017, the CBL hopes to one day cultivate a Yao Ming of baseball, which would bring huge exposure to the sport.

【1】What’s the main idea of paragraph 1?

A.The beginning of baseball in China.

B.The development of baseball in China.

C.The national competition of baseball in China.

D.The interest in this traditionally American sport.

【2】How does the writer develop this text?

A.By the time order.

B.By the cities adding.

C.By China’s interest growing.

D.By partner countries increasing.

【3】Which of the following can replace the underlined word "capture" in paragraph 2?

A.lose.B.found.

C.seize.D.control.

【4】What can we predict from paragraph3?

A.Baseball remains a mystery to most of Chinese people.

B.The interest in developing baseball is limited in China.

C.Chinese schools will have baseball education curriculum.

D.More baseball talents and fans will spring up in China.

You are never too old to go after your dreams. Many people don’t let age stop them. If they want to do something, they just do it. For example, Gladys Burrill ran her first marathon at 86. She became famous when she 【1】 (finish) the Honolulu Marathon (檀香山马拉松). She was 92 then. Life is about change, so don’t be afraid to take your 【2】 (one) step. It is easy after you do that. So, stop 【3】 (think) about your dreams, and start doing something about them.

1.学校有哪些社会实践活动；

2.你最喜欢哪一类活动；

3.喜欢的原因。

注意：1. 词数不少于50；2. 开头和结尾已给出，不计入总词数。

提示词：社会实践活动 extracurricular activity

Dear Jim,

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Yours,

Li Hua