Note: To attend the High School Component of the Summer Student Employment Program, you must have attended Level Ⅰ, Ⅱ or Ⅲ (high school) this school year, and you must be allowed to work in Canada, and not be a family member of the board of directors of the organization. Payments: $10.50/hour, 25 hours per week, 8 weeks Apply by: Wednesday, July 28, 2021 at Noon Please send your resume to: Them Days P.O. Box 939, Stn. B Happy Valley-Goose Bay, NL A0P 1E0 Fax: (709) 896-4970 E-mail: themdays@themdays.com

1. Who are suitable for the positions offered by Them Days?

A．Photographers.

B．High school students.

C．Tourists heading to Happy Valley.

D．Old people coming from Labrador.

2. What should an Editorial Assistant do?

A．Take photos for special topics.

B．Hold interviews with students.

C．Check facts in the magazine.

D．Help with tours in Happy Valley.

3. What do we know about those chosen to do these jobs?

A．They should be above Level Ⅲ.

B．They can apply on the afternoon of July 28, 2021.

C．They can be relatives of leaders of the organization.

D．They should work for the organization for 8 weeks.

Some Ohio high school students have become winners in a national contest (竞赛) after inventing a mobile phone app that helps needy families find local food pantries (公益食品仓库).

And someday the teens, who are students at Ross High School in Ross Township, may be selling the app to food pantries and food banks across America.

The app was created as part of a computer science class — coordinated (协调) by Butler Tech career school system at the high school. Three students, Jacob Kahmann, Gunner Nonnamaker and Kyle Inderhees, recently were visited by Congressman Warren Davidson, who praised their work. Davidson lauded the teens for creating “this app to set the standard for efficient food collection and distribution (分发)”.

Butler Tech IT Instructor Tom O’Neill said the students’ app includes characteristics that help users locate the nearest food pantry and improve food collection processes, and that the national contest provides a real-life learning chance for his students.

The students are continuing to make additions to the app and are working on turning it into a product, said O’Neill, who in recent years has helped many Ross High School teens win national honors for their computer-science-based inventions.

“The teachers and students in the Ross School District continue to amaze me with their future-thinking and creation,” said Superintendent Scott Gates. “Our students are not only thinking about careers, they are thinking about problems they want to change, solve or improve. The app that was created will make serving a population in need more efficient.”

4. What did these Ohio high school students do?

A．They built a local food pantry.

B．They made food for the hungry.

C．They invented a mobile phone app.

D．They set up a world food bank.

5. What does the underlined word “lauded” in paragraph 3 probably mean?

A．Prepared.

B．Praised.

C．Asked.

D．Paid.

6. What are the winners doing?

A．They are inventing some other apps.

B．They are serving in local food pantries.

C．They are trying to improve their creation.

D．They are taking part in a national contest.

7. Which of the following can best describe the three students?

A．Strict and proud.

B．Honest and generous.

C．Enthusiastic and caring.

D．Humorous and friendly.

Electric scooter (踏板车) companies are turning to technology to try to reduce accidents and injuries among riders and pedestrians (行人). The problem has become so serious that countries including Singapore, France and Spain have banned e-scooters on pedestrian walkways. A study of more than 100 riders surveyed in Washington D. C. found that nearly three in five were injured while riding on a sidewalk, even in places where it was banned.

Swedish operator Voi—which has more than 6 million scooter riders across 50 European cities—has worked with Dublin startup Luna to develop a system of cameras and sensors that can make out what surface a scooter is riding on, as well as the presence of nearby pedestrians.

The technology works in real time. A small camera fixed on the e-scooter films the lane (车道) ahead, while an algorithm (计算程序)—trained on thousands of pictures and videos—makes out the surrounding environment. With this information, the scooter can be programmed to react in a number of ways. “It could slow down its speed as the rider goes up on a sidewalk; it could reduce the speed if it discovers pedestrians on the pathway... It could give warnings to both the rider and the surroundings if the technology discovers behavior that we feel is unsafe,” says Shahin Ghazinouri, Vice President of Hardware Engineering at Voi.

Exactly how Voi’s scooters will react is yet to be decided, he adds, and will depend on results from a year-long trial of the technology in Northampton, England. During the first stage of the trial, e-scooters fitted with Luna’s technology were ridden by Voi employees. Luna CEO Andrew Fleury expects, in the second stage, the scooters will be rolled out across Northampton for public use.

Other e-scooter companies are developing similar systems. Alexandre Santacreu, the author of the International Transport Forum’s 2020 report on micromobility, says that while the technology developed by e-scooter companies is promising, addressing city infrastructure(基础建设) and motor vehicle speed limits should come first. Accidents among riders and pedestrians often “happen in places where scooter riders do not feel safe on the streets and they go onto the walkways,” he says. To deal with this, cities must introduce more cycle routes and work on slowing down cars, says Santacreu.

8. What is the problem mentioned in the first paragraph?

A．Many countries have banned e-scooters.

B．E-scooters have caused a lot of accidents.

C．Few e-scooter riders follow all traffic laws.

D．The number of e-scooters is rising rapidly.

9. What is paragraph 3 mainly about?

A．How the new technology works.

B．The testing of the new technology.

C．Why the new technology was developed,

D．The disadvantage of the new technology.

10. What can we learn about the new technology’s first-stage trial?

A．It lasted one year.

B．It had mixed success.

C．It was carried out by Voi’s employees.

D．It was held without Luna’s cooperation.

11. What does Alexandre Santacreu consider most important?

A．Slowing down e-Scooters.	B．Improving the new technology.
C．Providing lanes for e-scooter riders.	D．Banning e-scooter riders on streets.

When Dmitry Ivanovsky was still a student in 1887 he began his work on the Tobacco mosaic disease (烟草花叶病). The disease appeared to take hold in tobacco plants early on in their growth cycle, causing green and brown mosaics on the affected leaves. Ivanovsky first repeated and confirmed experiments performed by Adolf Mayer in which he took diseased leaves, extracted their sap (the liquid in a plant that carries food to all its parts), and injected (注入) the sap into healthy plants. Up to 80% of the healthy plants then became infected in these experiments.

Ivanovsky originally thought the disease was bacterial, and so he designed an experiment in which the diseased sap of a tobacco plant was filtered (过滤) through a Chamberland filter-candle which could filter out bacteria and works much like a modern water purifier. After filtering the sap, Ivanovsky injected it into healthy tobacco leaves. When the healthy plants began to show signs of infection, Ivanovsky proved bacterial filtering of diseased sap did not prevent the disease, and thus the infective creatures had to be unlike any bacteria that they had seen before.

Additionally, Ivanovsky provided evidence that the creature that was infecting tobacco plants was more of a particle (颗粒) than a liquid. He thought that the disease was more likely caused by either a living creature or a large molecule (分子). In his 1902 research paper he concluded: The sap of diseased plants was infectious; when the infected sap is heated, it is no longer infectious (heat changes the structure and characteristics of RNA and virus proteins, essentially killing them, so this makes sense); infection through bacteria may cause the disease.

It wasn’t until advancements in technology in the early-to-mid 20th century allowed scientists to take the first images of viruses that we were able to identify the Tobacco mosaic virus, and thus separated it from other living creatures such as bacteria and fungi. But it is because of the early work of Ivanovsky and Mayer scientists are able to understand viruses and viral diseases and continue the search for life-saving vaccines for fatal diseases such as COVID-19.

12. What did Adolf Mayer’s experiments prove?

A．The sap of diseased tobacco plants is infectious.

B．The mosaics on infected plants are green or brown.

C．The disease affects tobacco plants at an early stage.

D．The infective creature threatens most tobacco plants.

13. Why did Ivanovsky use a Chamberland filter-candle in his experiment?

A．To put much pressure on infected leaves.

B．To add some pure water to the infected sap.

C．To filter infected food in the tobacco leaves.

D．To remove the infective bacteria in the sap.

14. Which of the following does the author support?

A．Filtering the diseased sap can prevent the disease.

B．The infected sap is no longer infectious when heated.

C．Some kind of large molecules might cause the disease.

D．The unknown creature was more of a particle than a liquid.

15. What was the significance of Ivanovsky’s work?

A．It showed the differences between viruses and bacteria.

B．It took the first images of the Tobacco mosaic virus.

C．It made later identification of the virus possible.

D．It led to an effective life-saving vaccine.

STEM(Science, Technology, Engineering, and Mathematics) education is future-oriented (面向未来的). The demands for jobs that need routine skills have decreased, while those requiring more technical (技术的) skills have increased. We should encourage students to choose STEM fields after school.     16    

Improve the image of science.

Many people view science as something tough and boring. Much of this can be blamed on those movies and books that describe scientists as nerdy (书呆子).     17     They can tell students how science has changed the world and say interesting things about the subject. They can encourage their students by showing different scientific experiments.

    18    

If a student sees that a teacher is knowledgeable and passionate about science, then they will try to follow in their footsteps. So, try to act as their role model.

Make it fun.

You should get students involved in science at an early stage and try to make it fun and interesting. You can use hands-on experiments to develop their interest in science.

Connect it to everyday life.

You should show students how science is used in everyday life. We have cellphones, video games, computers, etc. because of science.     19    

Give them opportunities.

You can create competitions and ask the students to use science to come up with new ideas, designs, etc.     20     You can encourage group competitions as well.

A．Bring it to life.

B．Be a positive role model.

C．Teachers can play a big role in changing this view.

D．You should tell them how these things are making our life better.

E．For example, you can ask them to develop an app for everyday use.

F．Here are some ways to inspire students to choose science for their future.

G．You should encourage students to watch different programs related to science.

I was 10 years into my career, happily working at my research as a biology professor, when something unusual happened and I had to _______ my focus to teaching undergraduate classes.

It was hard to drop a research program that had defined my career and fueled (激发) my passions. To _______ the research world, I began to include journal articles in my undergraduate course, _______ lively discussions about the latest discoveries. _______, my students rarely dived into (钻研) the papers fully.

My students were _______ with memorizing facts, but they lacked deep understanding of how the conclusions were drawn. The ingenuity (独创力) of research — what I loved most about being a scientist — was _______ on them.

This changed the way I _______. I spent multiple classes deconstructing a single paper with my students, _______ each figure and table. I then asked, “If you had co-authored the paper, what would you do next?”

Some _______, “I’m not creative.” But I asked them to give it a try. After taking part in some group discussions, the students changed their __________. They were amazed by the variety of follow-up studies their classmates had thought up. They argued __________ about which ideas were better, expressing surprise when other groups made different choices. I was __________ to see each student commit to an idea, in the process discovering something about their own powers of __________.

What I really wanted my students to do was to develop their own inventiveness and __________ their imaginations. I hoped that what they learned about their own __________ would be the knowledge that lasts.

21.

A．add

B．shift

C．return

D．narrow

22.

A．keep away from

B．look back on

C．get down to

D．stay close to

23.

A．holding

B．preparing

C．expecting

D．ignoring

24.

A．However

B．Besides

C．Otherwise

D．Therefore

25.

A．moved

B．patient

C．bored

D．comfortable

26.

A．hidden

B．reflected

C．lost

D．found

27.

A．lived

B．thought

C．searched

D．taught

28.

A．analyzing

B．drawing

C．editing

D．memorizing

29.

A．hoped

B．hesitated

C．decided

D．pretended

30.

A．attitudes

B．tasks

C．methods

D．plans

31.

A．angrily

B．jokingly

C．proudly

D．passionately

32.

A．excited

B．curious

C．inspired

D．grateful

33.

A．concentration

B．observation

C．invention

D．devotion

34.

A．show off

B．tap into

C．depend on

D．check out

35.

A．performance

B．progress

C．creativity

D．adventure

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。

From robots delivering coffee to office chairs rearranging themselves after a meeting, a smart city project in China aims to put artificial intelligence     36     charge.

Last month, Danish architecture firm BIG and Chinese tech company Terminus     37    (discuss) plans to build an AI-run campus-style development in     38     southwestern Chinese city of Chongqing during an online global tech conference.

The project     39    (name) Cloud Valley, plans to use sensors and wifi-connected devices to gather data on everything from weather and pollution to people’s eating habits to meet residents’ needs     40    (automatic), said Terminus.

Cities around the world are racing to embrace (欣然接受) technology to improve urban life by     41    (collect) data to address problems like traffic jams (交通堵塞) and crime.

More than 500 smart cities are being built across China     42    (promote) growth in a global economic downturn.

The city, which includes offices, homes, public spaces and self-driving cars     43     move around under the watchful eye of AI, is due for completion in about three years, according to Terminus.

Yet, like other smart cities, its tech-driven approach has raised privacy concerns.

“Isn’t all of this a little     44    (frighten)?” asked a conference-goer. Another attendee said smart cities risked becoming a threat to human rights if     45    (company) and governments didn’t take steps to limit surveillance (监视) and ensure inclusivity.

47. 阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。

My grandfather belonged to a world of formal manners. He was handsome, always perfectly dressed, neat and tidy in the appearance. But that was only one part of my grandfather’s character. He was also the kindest person I’ve ever known.

One story returns to my memory again and again. I was 16 and took part in a school play. We had been preparing for the play for several months; it was our yearly event. All our parents, family and friends were scheduled to attend.

Our teacher, Mr. Razin, was devoted to art and took even a school play very seriously. He had written our play himself and he was committed to making sure it would succeed. He had strong views on social equality and he had written a play about a group of people who met a bedraggled(全身泥污的) homeless tramp(流浪汉). That was the plot.

Then disaster struck. The man who was to play the elderly tramp called in and told Mr. Razin that he could not appear. He did not give a reason. His unexpected decision shocked our teacher, and the cast(全体演员) sat looking at each other in hopelessness. It was two hours before the opening, and soon the audience seats would be full. The tramp was on stage the entire ninety minutes of the play. In addition, he was an old man, and we were all under twenty.

“Where can I find an actor at the last minute?” cried Mr. Razin. At that moment, I heard the familiar, sharp click of a man’s shoes, and my grandfather walked in. He was on his way to a formal event that night and had come to promise me that he would see most of the play even though he would have to leave early because of the event at which he had to make a speech. I took my grandfather aside and explained what had happened and that we probably would not be able to perform the play that night. I then introduced him to my teacher.

注意：
1.续写词数应为120词左右;
2.请按如下格式在相应位置作答。

The teacher stopped and looked at my grandfather.

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

My grandfather then said to Mr. Razin quietly: “I will do the part.”

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________