1 . When I was a practice teacher in a middle school，the students in my class were always making ______，and had no interest in chemistry. So I decided to do ______to change their______ towards chemistry.

The evening before I would teach all by myself，I gave a piece of paper to everyone. I told them to write ______ they wanted on the paper and handed it in and then I could tell what each one had ______ .All the students said I _____ be longsighted(远视)．Then I stood ______ my back towards them. I didn't turn back ______ they had finished and ______ all the paper in a cardboard case.

I turned the cardboard case with the bottom(底部)towards the students，and told them calmly what each one had written on the paper. The students were surprised，______ that I had learned their ______ completely in such a short time.

I told them the truth and they were ______ at my brightness：there were five lines of students in the classroom，and every line had ten students. I had written serial number(from 1 to 50 )on every ______ of the paper in a chemical reagent(试剂)that cannot be seen ______eyes，and then gave ______out to the students according to the groups of their seats. After the paper was ______ in，I used______ chemical reagent onto the corner of the paper. Thus the serial number was ______！

______ ，the students became ______ interested in chemistry，and we became good friends.

1.

A．progress

B．troubles

C．faces

D．efforts

2.

A．something

B．nothing

C．all

D．them

3.

A．methods

B．attitudes

C．feelings

D．interest

4.

A．that

B．how

C．when

D．what

5.

A．thought

B．seen

C．written

D．heard

6.

A．would

B．needed

C．had to

D．might

7.

A．with

B．for

C．to

D．as

8.

A．after

B．when

C．until

D．now that

9.

A．put

B．left

C．had

D．gave

10.

A．knowing

B．believing

C．seeing

D．hearing

11.

A．names

B．faces

C．characters

D．handwritings

12.

A．frightened

B．angry

C．sad

D．amazed

13.

A．corner

B．bottom

C．top

D．side

14.

A．in

B．for

C．with

D．to

15.

A．it

B．that

C．them

D．those

16.

A．given

B．handed

C．passed

D．offered

17.

A．expensive

B．useful

C．another

D．smelly

18.

A．made

B．seen

C．found

D．looked

19.

A．From then on

B．However

C．Though

D．So far

20.

A．a lot of

B．a lot

C．partly

D．greatly

2 . For many, Labor Day weekend signals the end of summer and an opportunity to host a socially-distanced barbecue (an outdoor meal). But this national holiday—celebrated every year in the United States and Canada on the first Monday in September—has revolutionary (革命性的) origins.

By the late 19th century, the Industrial Revolution had made working life miserable for people around the world. In many places, workers toiled for at least 12 hours a day six days a week in mines, factories, railroads, and mills. This holiday actually originated in the US on May 1, 1866, in what came to be known as the Haymarket Riot, workers flooded Chicago streets to demand an eight-hour workday.

It would take another conflict in the American Midwest to make Labor Day a national holiday. On May 11, 1894, workers at the Pullman Palace Car Company, a railroad car manufacturer near Chicago, went on strike to protest their low wages and 16-hour workdays. In August 1893, James Kyle introduced federal legislation (立法) to make Labor Day a public holiday, but for ten months the legislation was put on hold. To quiet the strikers and their supporters, the Senate quickly passed the bill on June 22. The bill passed the House four days later and President Grover Cleveland signed it into law on June 28, 1894.

The holiday is more information May Day labor celebrations. Many observers relax at home or head to outdoor recreational activities, such as boating, barbecues, and camping. It may also be marked with fireworks shows and other events. Labor Day has also become associated with retail sales, as many shop owners try to take advantage of the customers’ day off. It is one of the largest sales events of the year. meaning retail employees actually have to work more on this day. Parades are the most common model of celebration, which often feature processions of labor groups.

1. What do we know about the workers in the late 19th century?

A．They were paid well.	B．They had long workdays.
C．They often had a barbecue.	D．Their contributions were recognized.

2. Which can replace the underlined words “put on hold” in paragraph 3?

A．Put off.

B．Introduced.

C．Got through.

D．Protected.

3. When did Labor Day become an official holiday throughout America?

A．On May 1, 1886.

B．On August 22, 1893.

C．On May 11, 1894.

D．On June 28, 1894.

4. What’s the last paragraph mainly about?

A．The origins of Labor Day.	B．The labor groups achievements.
C．The ways to celebrate Labor Day.	D．The official activities on Labor Day.

3 . As a speaker of 10 languages I know the benefits of speaking more than one language. To start with, we need to dispel (消除) four common misconceptions about language learning.

You have to have a gift for learning languages.

No, you don’t.     1     In Sweden and Holland most people speak more than one language. They can’t just all be gifted at languages. In language learning it is attitude, not aptitude (天赋) that determines success.

    2    

Some immigrants to North America never learn to speak more than broken English. Yet we meet people in other countries who speak flawless English. With the Internet, language content is available to anyone with a computer.     3    

To learn a language you need formal classroom instruction.

Classrooms may be economical to run and a great place to meet others. They have the weight of history and tradition behind them. Unfortunately, a classroom is an inefficient place to learn a language.     4     A majority of school kids graduate unable to communicate in languages that they study for 10 or more years.

I would love to learn but I don't have the time.

How about the time you spend waiting in line or going for a walk? Why not use that time to listen to a language on your iPad? Once you get started, even 10 or 15 minutes a day will soon grow to 30 minutes a day, or one hour.     5     As I do, you will find the time.

A．That’s my experience.

B．Anyone who wants to, can learn.

C．Where you live is not a problem.

D．You need to speak in order to learn.

E．You have to live where the language is spoken.

F．The more students in the class, the more inefficient it is.

G．We simply have to change the way we go about teaching languages.

4 . 阅读下面短文, 在空白处填入1个适当的单词或括号内单词的正确形式。

Lots of foreigners don’t understand why so many Chinese people are sorrowful about Yuan Longping’s passing away.

This reminds me     1     an issue more than 20 years ago,     2     I was a Chinese journalist in the US. Some American scholars     3     (think) China could hardly realize food-sufficiency because of the     4     (limit) water resources, decrease of agricultural land due to industrial     5     (expand) and the fast population growth. Just at that time, Yuan Longping announced breakthroughs in planting the new rice.     6     (bring) to large area application, this technique improved the annual growth of rice greatly, which fed     7     population of 60 million--equal to the whole of the UK.

Western scholars’ prediction of China back then was indeed analyzing China’s problems, but they failed     8     (realize) that the Chinese people have the capability to deal with these challenges.

If they had had any knowledge of Yuan who worked devotedly for our country, they wouldn’t have made such pessimistic evaluations. Why did the Chinese people make     9    ? Why are so many predictions about China in the West     10    (accurate)? It’s time to change minds to better understand China.

5 . 阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。

With the International Conference on Food Loss and Waste closed on Saturday in Jinan, Shandong Province, the country has sent a signal to     1     world that China will deal with issues concerning food security by reducing loss and waste in agriculture. With the theme of reducing food loss and food waste and promoting     2     (globe) food security, the three-day event     3     (hold) both online and offline attracted more than 300 participants.

The current world grain production is about 2.8 billion tons a year. Therefore, the loss of only one percentage     4     (be) equal to the loss of 28 million tons of food. This can feed about 70 million people.

In recent years, China     5     (make) great progress in controlling loss and waste in food, with main efforts including upgrading facilities and     6     (equip). In Shandong Province, China’s major grain producer, the Sinograin (中粮集团) grain storage site is equipped with 4,500 high-definition cameras and 280,000 temperature sensors     7     (ensure) that the stock (储备) is in the best condition. Data shows that during China’s 13th Five-Year Plan period (2016-2020) , about 13 million tons of food had been saved     8     (year) after production.

We cannot end hunger     9     we do not deal with the high levels of food loss and waste. Cooperation and innovations (创新) in business models, technologies and digital solutions could all contribute     10     reducing food loss and waste.

6 . New methods have allowed researchers and scientists to find a way to reduce heat loss from buildings by about 30%. This new “green” solution is quite literally (确实地) green as it involves fitting a living wall by sticking soil and plants onto the walls, according to a new research.

To see what effects renewing a living wall on an existing building would have on the environment, the scientists decided to test it out on a building at a university in the UK, which was originally built in the 1970s. As a control, part of the building was not fitted with the living wall. Both of the parts of the building were west-facing and the test was conducted over 5 weeks. They found that the part with the living wall lost 31.4% less heat as compared to the side without it. So it took less energy to heat and had environmentally friendly effects.

In the UK, approximately 57% of buildings were built before 1964. They have caused 17% of greenhouse emissions (排放), about 60% of which come from house heating. If people could reduce heat loss from older buildings by 30%, a huge part of greenhouse emissions could be eliminated. While regulations have changed recently to improve the thermal performance (热性能) of new constructions, it is the existing buildings that require the most energy to heat and are a significant contributor to carbon emissions. It is, therefore, essential that people begin to improve the thermal performance of these existing buildings if the UK is to reach its target of net (净) zero carbon emission by 2050, and help to reduce the possibility of fuel poverty.

The new research suggests living walls can also provide significant energy savings to help reduce the carbon footprint of existing buildings. Perfecting these living wall systems, however, is now needed to help increase the environmental benefits.

1. What did the researchers find about the living wall in the test?

A．It protected the building very well.

B．It caused serious waste of some fuels.

C．It reduced the heat loss of the building.

D．It made the building look more beautiful.

2. What does the underlined word “eliminated” in paragraph 3 mean?

A．Repeated.

B．Removed.

C．Defeated.

D．Renewed.

3. What measure should the UK take to reduce carbon emission?

A．Pulling down the older buildings.

B．Cutting down the prices of fuels.

C．Reducing heat loss from the older buildings.

D．Adding more living walls to new buildings.

4. Which of the following can best describe the living wall?

A．Promising.

B．Doubtful.

C．Expensive.

D．Impracticable.

7 . 听下面一段独白，回答以下小题。
1. What is the first sight to visit this afternoon?

A．The Liberty Bell.

B．Chinatown.

C．Ben Franklin’s house,

2. When will the visitors visit the Art Museum?

A．On the first day.

B．On the second day.

C．On the third day.

3. When will the tourists leave the hotel for sights?

A．At 1:30 pm.

B．At 1:50 pm.

C．At 2:00 pm.

4. Where can the tourists swim to relax?

A．On the third floor.

B．On the fifth floor.

C．On the top floor.

8 . 听下面一段较长对话，回答以下小题。
1. What does the woman think of English?

A．It is quite difficult to spell.

B．It is a stress-based language.

C．It is widely spoken in the world.

2. What’s the man’s problem while speaking English?

A．He doesn’t have enough vocabulary.

B．He can’t pronounce exactly like a robot.

C．He can’t tell strong and weak forms.

3. What does the woman advise the man to do?

A．Listen to music.

B．See English films.

C．Stress words clearly.

9 . 听下面一段较长对话，回答以下小题。
1. What is the man doing?

A．Broadcasting news.

B．Chairing a programme.

C．Doing history research.

2. What could police hats be used to do in the 19th century?

A．To stand on.

B．To attack enemies.

C．To avoid getting burned.

3. How does the woman sound?

A．Impatient.

B．Enthusiastic.

C．Humorous.

10 . Marie Van Brittan Brown, an African American nurse living in Jamaica, Queens in the 1960s, was working in shifts, as was her husband, Albert, an electronics technician. When she arrived home late, she sometimes felt afraid. Serious crimes in Queens jumped nearly 32 percent from 1960 to 1965, and police were slow to respond to emergency calls. Marie wanted to feel safer at home.

With the help of her husband, Marie imagined a device that could be attached to the front door. It would offer four small holes, and through these, a video camera on the inside could view visitors of different heights as the host turned the camera up and down. The camera was connected to a television monitor inside. A microphone on the outside of the door and a speaker inside allowed the host to interrogate a visitor, while an alarm could inform police via radio.

Closed-circuit television (CCTV), invented during World War II for military use, was not widespread in the 1960s, and the Browns proposed using the technology to create the first modern home security system. They filed a patent for their device in 1966, citing(提及) Marie as the lead inventor. It was approved three years later. “The equipment is not in production,” The New York Times reported, “but the Browns hope to interest manufacturers and home builders.” That never happened. “The cost of installing(安装) it widely would be pretty high,” says Robert McCrie, an emergency management expert at John Jay College of Criminal Justice in Manhattan.

Marie’s invention, though it didn’t benefit them financially, would earn the Browns a measure of recognition in the technology world: The predecessor(前身) of today’s home security systems, it has been cited(引用) in 35 U.S. patents.

1. What can be learned about Marie?

A．She lived in a dangerous neighborhood.	B．She worked as an electronics technician.
C．She went home with her husband every day.	D．She was afraid of making an emergency call.

2. What does the underlined word “interrogate” in paragraph 2 probably mean?

A．Attract.

B．Frighten.

C．Welcome.

D．Question.

3. What was the problem with the Browns’ system?

A．It was considered to be a silly invention.	B．It was thought little of by the then police.
C．It was too expensive to be mass-produced.	D．It was illegal to be used by ordinary people.

4. What can we say about Marie and her husband?

A．They contributed a lot to CCTV.	B．They were generous and responsible.
C．They helped reduce crime in the 1960s.	D．They were intelligent and worthy of respect.