Engineers have launched a huge garbage collection device to gather plastic material floating in the Pacific Ocean between California and Hawaii.
The plastic makes up what is called the Great Pacific Garbage Patch. It is the world's largest spread of garbage, at twice the size of the state of Texas.
The organization Ocean Cleanup created the collection device, whose founder is Boyan Slat, a 24-year-old inventor from the Netherlands.
Slat was just 16 years old when he was moved to clean up the oceans. Last Saturday, a ship pulling the pipe-shaped floating barrier left San Francisco for the Garbage Patch. The barrier, called the floater, is 600 meters across. Attached to it is a screening skirt that hangs three meters down in the water.
The screen is designed to collect the plastic as it moves through the water. Sea animals can safely swim under the barrier.
The cleanup system also comes with lights powered by the sun, cameras, and other special devices. So the system can communicate its position at all times. That way a support ship can find it every few months to remove the plastic it has collected.
“The free-floating barriers are made to survive extreme weather conditions and damage from continual use. They will stay in the water for twenty years and in that time collect 90 percent of the garbage in the patch,” Slat added.
George Leonard is the chief scientist. He expressed concern about the cleaning project. He said even if plastic garbage can be taken out of the oceans, more continues to enter the water each year. He also raised concern that animals might be captured by the net hung below the surface.
But, Boyan Slat said he did not think that would happen. The system will act as a “big boat that stands still in the water”, with nothing for sea creatures to get caught in.
1. What is the function of the screening skirt in the floater?A.To gather plastic. | B.To catch sea animals. |
C.To protect the floater. | D.To give the floater power. |
A.In Texas. | B.In San Francisco. |
C.In the Netherlands. | D.In the Pacific Ocean. |
A.It's easy to locate. | B.It is not affected by bad weather. |
C.It can last and work for a long time. | D.It is convenient to operate. |
A.An advertisement. | B.A science experiment. |
C.An environmental protection report. | D.A biology textbook. |
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【推荐1】A small group of Cuban dive instructors have started a project to grow coral (珊瑚) and replant it. The divers hope to restore part of Cuba’s barrier reef (堡礁). And they are working with limited financial support and using materials recovered from the coast.
Luis is one of the project’s leaders. The 44-year-old fisherman grew up on Cuba’s north coast. He said, “It’s incredible to see the loss of coral in the past 30 years.” He added, “Our dream is to make the parts of the barrier reef that have lost their coral grow again.”
To make that happen, Luis worked with other dive instructors and neighborhood schoolchildren with the support from Cuba’s environmental organizations. They began collecting pieces of coral spread across the ocean floor after large storms three years ago. The pieces were then hung on branches of underwater “trees” made from old plastic pipes and supported by fishing lines recovered from the coast. They were then “replanted” on the coral reef, fixed by nails driven into the rock. In a year, most survive and grow enough to repopulate the part of the barrier reef between 60 to 80 meters in length.
Like many coral reefs around the world, the ones in Cuba are threatened by changing water temperatures, destructive plants and animals, pollution and over-fishing. It is reported that the world has already lost 30 to 50 percent of its coral reefs.
Karine is a French diver who just visited Cuba for the first time. She said the reef looked better than others she had seen on dives elsewhere in the world, including in Africa. “The coral needs to be protected,” she said after two dives on a recent trip to nearby Varadero. She said, “It’s good to see that in Cuba they take care of what they have, and that it is still not too affected by too much tourism.”
1. What can we infer from the recovery of the Cuba’s barrier reef?A.It is just a new project to start. |
B.It is a slow and difficult process. |
C.It is mainly carried out by schoolchildren. |
D.It is greatly supported by the government. |
A.They are fastened to the rock by fishing lines. |
B.They are supported by the trees on the ocean floor. |
C.They are placed firmly by nails driven into the rock. |
D.They are hung by old plastic pipes collected on the coast. |
A.Endangered. | B.Beneficial. | C.Plentiful. | D.Harmful. |
A.Doubtful. | B.Concerned. | C.Positive. | D.Disappointed. |
【推荐2】Recycling
![](https://img.xkw.com/dksih/QBM/2019/4/15/2182829061029888/2184608941473792/STEM/818e8d44c04344c7bdd809c8346fc315.png?resizew=546)
![](https://img.xkw.com/dksih/QBM/2019/4/15/2182829061029888/2184608941473792/STEM/95d0382dfde9482b838a89338593100d.png?resizew=264)
Recyclable items are waste materials that can be processed to make new products. The recycled materials go through an intense process of separating the materials and converting into reusable products. At Waste Control, we offer a suite of on-site and off-site recycling services to meet the needs of our residential and business customers.
ON-SITE RECYCLING SERVICES
At the Waste Control facility, we have Drop-off Recycling and Buy-back Recycling Centers. The drop-off recycling center is a free service and is located next to the Transfer Station Building entrance. The Buy-Back Recycling Center is located on the north end of the facility and is for customers wishing to be reimbursed(报销,偿还) for their recyclable materials at current market rates.
OFF-SITE RECYCLING SERVICES
We also offer many off-site recycling services to meet your needs. We maintain free drop-off recycling sites throughout the community for common recyclable materials and residential waste oil and antifreeze. We also offer off-site residential roadside recycling and business recycling services.
HOURS & DIRECTIONS
Waste Transfer Station, Drop-off Recycling Center, & Buy-back Recycling Center:
7:30 a.m. to 5:30 p.m. – 7 days a week
Business Office:
8:00 a.m. to 5:00 p.m. – Monday through Friday
Holiday Hours:
The Business Office is closed on all major holidays (New Year’s Day, July 4th, Memorial Day, Labor Day, Thanksgiving, and Christmas).
The Transfer Station is open for self-hauled waste, drop-off recycling, and buy-back recycling for limited hours during holidays. The facility is closed Christmas Day, New Year’s Day, and July 4th–if it falls on a weekend. The facility closes at 12 noon on Memorial Day, Labor Day, Thanksgiving, and July 4th–if it falls on a weekday. The facility is open on all other holidays.
Waste collection and roadside recycling services are uninterrupted during holidays, except for Christmas Day and New Years Day. If Christmas Day or New Year’s Day fall on a weekday, there will be no pickup on the holiday and all garbage and recycling services will be moved one day forward from your regularly scheduled pickup for the remainder of the week. For example, if Christmas falls on a Wednesday, customers with regularly scheduled Wednesday service will be picked up on Thursday. Customers with regularly scheduled Thursday service will be picked up on Friday. Customers with regularly scheduled Friday service will be picked up on Saturday. Monday and Tuesday fall prior to the holiday and will be picked up as regularly scheduled.
1. If you wish to be paid back for the recyclable items, you should ________.A.check the current market rates first |
B.take them to the Waste Control facility |
C.put them into the roadside recycling sites |
D.separate them from waste oil and antifreeze |
A.Tuesday | B.Wednesday | C.Thursday | D.Friday |
A.Off-site services are not offered to collect business recyclable materials. |
B.Waste Transfer Station is open on July 4th morning if it falls on a weekend. |
C.The drop-off recycling center is far away from the buy-back recycling center. |
D.There is no need for residents to pay for dropping off recyclable materials. |
【推荐3】Artificial intelligence (AI) could help stop one of the biggest dangers to the Great Barrier Reef, amazingly saving huge areas of coral from a harmful starfish. Google has teamed with scientists from the CSIRO to create AI software that could pick out the dangerous starfish, which is one of the natural wonder’s three biggest killers.
The new way, using footage from an underwater camera to recognize starfish outbreaks on the Queensland reef, takes the place of an old method and early results show as well as cutting down man’s work, the new software has the advantage of correctly picking out more of the dangerous life on coral, stopping damaging outbreaks before they occur.
Professor Russ Babcock, an expert with CSIRO, said Google’s AI technology, developed over 18 months, could be trained to find out starfish more easily than the old method developed in the 1970s. “We used to send out divers to count the starfish one by one. Now we just look at the images collected and the program can find 20 at a time,” he said.
Google CEO Sundar Pichai said he was excited about the company’s effort put into the reef project. “We have put a lot of effort into the engineering in Australia and we will continue to do more work around AI there,” he said. “There are other good ideas about the technology and you will see us build on it. Our goal with our AI research teams is to strike partnerships with other groups, like universities and governments, to give its full play.”
Professor Babcock said the AI software, which would be put into use on other reefs worldwide, was not the only solution to the starfish affecting the Great Barrier Reef, but one that could have an wide application.
1. What is the function of Google developing the AI software?A.To pick out a kind of starfish. | B.To kill dangerous fishes. |
C.To protect the environment. | D.To test a new camera. |
A.It is less likely to break down. | B.It can be started more quickly. |
C.It costs less for its development. | D.It can do the work more easily. |
A.Doubtful. | B.Uncaring. |
C.Supportive. | D.Disapproving. |
A.The AI software is the best way to stop starfish outbreak. |
B.The AI software can be applied widely. |
C.The research teams won’t continue to do more work around the engineering in Australia. |
D.The old method used to look at the images collected by an underground camera. |
【推荐1】When you buy food or other products at the store, you probably don't think much about the people who grew them or made them. That's normal, but many farmers and others involved in producing food and other goods have very hard lives. Farmers work hard to grow crops, but sometimes the weather is bad, and their fields don't produce much. Or sometimes the price of what people produce goes down, and they can't earn enough to support their families. In some industries, workers are not fairly paid to make products cheaper. The fair trade movement tries to solve these problems by taking care of the people whose work benefits consumers.
Fair trade is difficult to define because it includes multiple organizations in many countries. These organizations encourage distributors (分销商) to pay a specified (指定的) minimum price for products. This minimum is often higher than the market price, but it makes sure producers earn enough to make a living. Distributors also pay some additional money that goes to the community that produced the product. This money is spent to thrive the community. For example, they might build a school or dig a well, either of which benefits everyone who uses it.
To be labeled fair trade, products have to be made following certain high standards related to treating workers well and protecting the environment. This can be expensive, but the higher prices paid by purchasers cover the extra costs. These standards can vary from industry to industry to reflect the details of the various production processes.
What does this mean for you? Many fair-trade organizations offer certification for products made with fair-trade ingredients (成分). There are different levels of certification depending on what percentage of the ingredients are fair trade. Certain websites can help you find fair-trade products.
Buying fair-trade products when possible is important because it communicates that you want companies to be involved in fair trade. Businesses need to make money, so manufacturers (制造商) are more likely to use fair-trade ingredients if they know people will pay for them. It's also important for your own integrity. Buying fair trade ensures that you're not benefiting from someone else's suffering. If you want to help more, you can write to companies you buy from and ask them to use fair-trade ingredients. In short, fair trade is about helping people who help you through their labor.
1. The fair trade movement aims to ________.A.guide farmers to produce more crops |
B.help the people who make the products we use |
C.tackle the problem of food shortage in rural area |
D.encourage consumers to purchase more products |
A.Rebuild. | B.Develop. | C.Recover. | D.Decorate. |
A.distributors are in charge of the market price |
B.the products labeled fair trade are of higher quality |
C.organizations in fair trade encourage them to do so |
D.they need to pay for the expense to meet the high criteria |
【推荐2】The Irish playwright George Bernard Shaw once noted, “England and America are two countries separated by the same language.” As a native of Britain, raised to speak the Queen’s English, I never could have foreseen just how much translating would be required while living on the east coast of America. While both the British and Americans officially speak the same language, our different communication styles and cultural contexts can make it really hard to communicate with one another.
I have countless examples of the confusion different nouns can bring. Translations learned from the TV shows of my childhood were an easy adaption: “pavement=sidewalk”, “motorway=highway”, and “boot=trunk”. We were stretched a little more after having children: “pushchair=stroller”, “nappy=diaper”, and “paddling pool=kiddie pool”. In most cases, British words are met with a blank look from clerks. When the right American equivalent happens to be slow at coming to mind, my husband and I turn to what may appear to an onlooker as charades(打哑谜猜字游戏) in an effort to make ourselves understood.
Similar scenarios of being misunderstood have been played out in the business arena during my seven years in the United States. On the business front, I have found that the need to adapt not just my terms, but also my communication style, is even more critical than in the personal realm.
In many ways, the stereotype of British people as indirect communicators does hold true. It does not serve us well in the United States, however. I have forced myself to stop prefacing(以……作为开场白) emails with “I believe” or “maybe” when I actually mean “it is” or “just do it”. A modest start to anything in the straight-talking land of the free is simply interpreted as a weak suggestion, or a lack of confidence in oneself.
In our cultural context, directness can be viewed as rudeness. So we politely ask, “Are there any other options to consider?” instead of bluntly stating the fact that “I don’t like your idea”. We tend to assume that the people we are addressing understand our underlying message. However, it turns out that our audience is not reading between the lines in the same way our fellow Britons would; they are expecting us to state our case in “plain English”. I have seen positive results from adjusting my communication style, and have achieved a greater understanding of my colleagues and our differing cultures.
Sometimes you may not need to cross an ocean to find yourself misunderstood. Even if you are speaking the same language, take a page from my experience. Communicating is about a message being sent AND received—and you will want to make sure that your audience is receiving the message you intend to deliver.
1. According to the article, which of the following words might have confused the author when she settled in the United States?① chips 2 pants 3 dress 4 football
A.①②③ | B.①②④ | C.①③④ | D.②③④ |
A.easy to misunderstand Americans |
B.important to learn about different cultures |
C.natural to get into trouble in a foreign country |
D.necessary to adjust her own communication style |
A.the impact of language barriers |
B.the complexity of cultural contexts |
C.the difficulty in learning a foreign language |
D.the significance of effective communication |
【推荐3】Every machine and power station, even renewable energy like wind and solar, creates waste heat that is simply lost in the atmosphere. Thankfully, scientists and engineers are devoted to collecting heat and changing it into useful electricity. Now researchers at Penn State University have created a flexible thermoelectric(热电的)generator(发电机)that wraps around hot water or exhaust(排气)pipes, turning heat into electricity.
Flexible devices are more efficient because they attach to pipes in factories or on vehicles without having to be glued on like fixed devices. Then the thermoelectric materials turn temperature differences between the surface fixed to the pipe and the cooler outer surface into electric current—called the Seebeck effect.
Thermophotovoltaic (热光伏的) devices are another promising way to use this waste heat. University of Michigan engineers have created a machined thermophotovoltaic cell that could be used to generate electricity from extra renewable power. The cells would use heat and turn it into electricity on demand, in a form that is much cheaper than batteries, say its creators.
One of the factors important to any device’s thermoelectric efficiency is its material. If higher electrical energy can be created with smaller temperature differences, then the materials are said to have a high ZT value. Using a special material scientists have doubled the previous best. The random distribution of atoms in their material slows down the way heat passes through it, making the thermoelectric effect last longer, able to power sensors and small computer processors. Low temperature generation includes computers and cars, making pyroelectrics (热电体) particularly useful for squeezing more energy out of electronic systems.
Another relative advantage is inexpensive materials. More abundant elements like tin is cheap and abundant, with high ZT values when combined in the right way. Their use could lead to greener car engines.
And when it comes to personal electronics, thermoelectrics could eventually beat traditional charging hardware. Chinese researchers have built a wristband that gathers body heat to power a LED and may be able to power smartwatches or other mobile devices in the future.
1. What is the thermoelectric generator used for?A.Reducing the air pollution. |
B.Introducing a renewable energy. |
C.Controlling the exhaust waste. |
D.Transforming waste heat into electrical energy. |
A.To illustrate a point. | B.To clarify a concept. |
C.To show a connection. | D.To make a comparison. |
A.Its high ZT value. | B.Its renewable power. |
C.Its temperature. | D.Its electronic systems. |
A.To reduce waste heat. | B.To make LED. |
C.To charge smartwatches. | D.To start vehicles. |