Walls blanketed in moss(苔鲜)are popping up in major cities, along with promises that they can reduce air pollution—but can a few square metres of plant matter really deal with the smog?
A Berlin-based firm, Green City Solutions, believes so. Its moss walls, called the CityTree, are roughly 4 square metres in size. Armed with Wi-Fi sensors to monitor the health of moss, a City Tree functions autonomously and requires very little maintenance(维护). The wall collects rainwater, which is pumped through a built-in irrigation system to the plants, powered by solar energy. As a result, the firm says each CityTree is able to “eat” around 250 grams of particulate(颗粒) matter a day (nearly 90 kgs a year) and removes about 240 metric tons of CO2 annually. It also cools the surrounding air.
Aware that getting the surrounding air in contact with the moss wall is crucial for the CityTree to be effective, the inventors ensure that the location of each installation (安装) is chosen carefully. Spots where pollution is heavy due to traffic and where air flow is limited are picked. The importance of this step is explained by the fact that the waste gas from a car generally goes vertically a few kilometres into the air.
But this doesn’t mean moss walls will necessarily protect people from pollution. In the Netherlands, researchers found that eight walls installed in Amsterdam failed to reduce the concentration of particulate matter (PM) and nitrogen dioxide (N02). Their report concluded that even doubling the number of moss walls would do little to improve their effectiveness.
The CityTree is not meant for parks or to substitute for street trees, but to add greenery to concrete-heavy spaces where planting is not an option. It’s important to remember that street trees provide a whole host of other benefits, including shelter and habitat for urban wildlife, shade and cooling for people on the street, and reduction of urban heat islands.
1.What do we know about the CityTree?
A.It can absorb some air pollutants. B.It can irrigate other street plants.
C.It produces electricity to cool water. D.It is aimed at saving water in cities.
2.What is Paragraph 3 mainly about?
A.The importance of CityTree.
B.The function of CityTree.
C.How to operate CityTree.
D.Where to place CityTree.
3.Why is the example of Amsterdam mentioned in Paragraph 4?
A.To show that CityTree can’t always work well.
B.To prove that CityTree can reduce air pollutants.
C.To emphasize the necessity of building moss walls.
D.To analyze the reasons for the failure of the program.
4.What is the author’s attitude towards replacing street trees with moss walls?
A.Ambiguous. B.Disapproving.
C.Supportive. D.Cautious.
Tired of standing in line? Wait a bit longer, and you may never have to again. Everyone from Amazon to Silicon Valley startups is trying to lines in retail stores.
Amazon has opened 24 of its Amazon Go stores, which use cameras and artificial intelligence to see what you've taken off shelves and charge you as you walk out. Some startups are closely copying Amazon's approach to using AI-powered cameras fixed in ceilings. But others are trying an entirely different way to skip the checkout: smart shopping carts. These companies have added cameras and sensors to the carts, and are using AI to tell what you’ve placed in them. A built-in scale weighs items, in case you have to pay by the pound for an item. Customers pay by entering a credit card, or through an online payment system. When a customer exits the store, a green light on the shopping cart indicates that their order is complete, and they’re charged.
The startups behind the smart carts, including Caper and Veeve, say it’s much easier to add technology to the shopping cart than to an entire store. Amazom's Go stores rely on hundreds of cameras in the ceiling. The shelves also include sensors to tell when an item is removed. Ahmed Beshry, co-founder of Caper, believes the technology to run Go is too expensive to use in a large format grocery store. Neither Caper nor Veeve have said how much their smart shopping carts will cost, making it difficult to compare the different formats. Shariq Siddiqui, CEO of Veeve, said he’s finding increased interest from retailers given Amazon’s steady expansion of Go since opening the first store in Seattle in 2018. “We’re always happy when Amazon is doing something,” Siddiqui said. “They force retailers to get out of their old school thinking.”
Each time a business uses artificial intelligence and cameras, it raises questions about customer privacy and the impact on jobs. Beshry notes that the cameras in his shopping cart point down into the cart, so only a customer’s hand and part of their arm will be captured on camera.
1.What do we know about the smart shopping carts?
A.They are linked to the cameras fixed in the ceilings.
B.They can tell customers where to find what they want.
C.They flash the green light when the order is cancelled.
D.They are able to recognize purchases placed in them.
2.What does Beshry think of the technology applied in Amazon’s Go stores?
A.It is far more expensive than their shopping carts.
B.It may increase the cost of running a store greatly.
C.It has attracted many more retailers than before.
D.It is likely to help retailers to think differently.
3.What is the best title for the text?
A.The New Technology Promotes Retail Sales
B.AI-powered Cameras Are Used in Retail Stores
C.Smart Shopping Carts Will Let You Skip the Line
D.Artificial Intelligence Affects the Future Job Market
Sharon Okpoe has lived her entire 17 years in Makoko, known as the world’s largest “floating slum (贫民窟)”, built on a lake in Lagos, Nigeria. Okpoe’s father is a fisherman, and her mother sells smoked fish.
As many as two-thirds of the city’s 21 million residents live in slums. “Most girls are trapped in a terrible cycle of poverty. Many of them are not thinking of education, a plan for the future,” Abisoye Ajayi-Akinfolarin, a computer programmer in Lagos, recalls. But several times a week, girls like Okpoe get a glimpse of another world when they attend GirlsCoding, a free program run by the Pearls Africa Foundation that seeks to educate and excite girls about computer programming. Since 2012, the group has helped more than 400 disadvantaged girls gain the technical skills and confidence they need to transform their lives.
It’s the vision of Ajayi-Akinfolarin, who left a successful career to devote herself to this work. She'd noticed how few women worked in this growing field-a 2013 government survey found that less than 8% of Nigerian women were employed in technology jobs. She wanted to fix the gender gap. “Technology is a space that’s dominated by men. Why should we leave that to guys?” she said. “I believe girls need opportunities.”
Now, dozens of girls aged 10 to 17 get trained in computer programming technology. “I believe you can still find diamonds in these places,” Ajayi-Akinfolarin said. “They need to be shown another life.” One way her program does this is by taking the students to visit tech companies — not only showing them what technology can do, but also helping them visualize themselves joining the industry.
Okpoe, for one, has taken this to heart. She helped create an app called Makoko Fresh that went live this summer, enabling fishermen like her father to sell seafood directly to customers. She even wants to become a software engineer and hopes to study computer science at Harvard. “One thing I want my girls to hold onto is, regardless of where they are coming from, that they can make it,” Ajayi said. “They are coders. They are thinkers. Their future is bright.”
1.What can we learn about GirlsCoding?
A.It encourages girls to land a job in education.
B.It offers Nigerian girls in need part-time jobs.
C.It helps girls working in Lagos to fight poverty.
D.It teaches girls in Makoko computer programming.
2.What did Ajayi-Akinfolarin say about the growing field in Paragraph 3?
A.Men could do far better in technology jobs.
B.Girls should get equal work opportunities.
C.Men normally got paid more than women.
D.Girls tended to devote themselves to work.
3.What does the underlined word “this” in Paragraph 4 refer to?
A.Rebuilding the girls’ confidence.
B.Training the girls to find diamonds.
C.Presenting a different life to the girls.
D.Taking the girls to technology companies.
4.What can we infer about Okpoe from the last paragraph?
A.She got fishermen to benefit from her app.
B.She was admitted to Harvard University.
C.She took her father’s suggestion to heart.
D.She made some changes to computer science.
Shanghai University of Sport (SUS) Invites Global Talents
The Physical Fitness teaching team is one of the excellent national-level course teaching teams at SUS. The main courses of this team are Theories and Methods of Healthy Fitness Assessment, Sports Prescription and Sports Health Management. The following positions are available for applicants worldwide.
Leading Expert
Qualifications:
* A Ph.D. degree or an MD degree from an accredited(授权的)institutionis required.
* Applicants have productive research activities, including, but not limited to, publications, conference presentations, and copywriting.
Faculty Member Qualifications :
* A Ph.D. degree or an MD degree from an accredited institution is required.
* Applicants have successful teaching experiences at the undergraduate and graduate level.
* Disciplines: Physical Health Monitoring, Fitness Assessment, Preventive Medicine, Statistics, Child Health, Nutrition and Food Safety, and Data Science.
Postdoc Fellowship Qualifications :
* A Ph. D. degree from an accredited institution is obtained within the last 3 years; fresh graduates are given priority in consideration.
* The first author publications in peer-reviewed journals and a strong publication record are preferred.
* Strong communication and cooperation skills and an interest in working in an inter- disciplinary environment are also required.
Research Assistant Qualifications:
* An MD degree from an accredited institution is obtained within the last 3 years in sports rehabilitation(康复)medicine or closely related fields.
* Strong publications in top international journals (the first author) are preferred.
* Good hands-on skills and good English communication skills are required.
Please email all materials as a PDF file to Dr. Kailimi Li at likailimi@ sus. edu. en with the subject: the title of the position for which you are applying. Application deadline: July 31, 2020 or until filled.
1.Which position favors a recent graduate with a Ph.D. degree?
A.Leading Expert. B.Faculty Member.
C.Postdoc Fellowship. D.Research Assistant.
2.Who is most likely to get the position of Faculty Member?
A.A regular contributor to international journals.
B.A researcher in sports rehabilitation medicine.
C.A writer giving many conference presentations.
D.A professor teaching Nutrition and Food Safety.
3.What is the common qualification required by all the positions?
A.A degree from an accredited institution.
B.Communication and cooperation skills.
C.The first author publication record.
D.A good command of English.
假定你是李华，你班外教Ms. Cindy任教期满即将回国。作为班长，你将代表班级 在告别会上发言致谢,并赠送带有中国文化特色的礼物。内容包括：
1. 感激之情；
2. 礼物寓意；
3. 美好祝愿。
注意：1. 词数100左右；
2. 可适当增加细节,以使行文连贯。
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文中共有10处语言错误，每句中最多有两处.每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧ ），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉°
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：
1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者(从第11处起)不计分.
Recently, my class has participated an activity organized by our school for Earth Day. We felt this our duty to arouse people’s awareness of protecting our earth. First, we make some handcrafts with some plastic bottles and that waste paper. Then, we held a exhibition in a community and gave them up to visitors. What inspired us more was their love and praise to our handcrafts. At last, at that shared meeting, our monitor gave a speech. But he said that only if each of us took measure to protect our earth could we make a better earth.
