金太阳百万联考5月高三英语试题

C

If plastic had been invented when the Pilgrims sailed from Plymouth, England, to North America—and their Mayflower had been stocked with bottled water and plastic-wrapped snacks, their plastic waste would likely still be around four centuries later. Atlantic waves and sunlight would have worn all that plastic into tiny bits. And those bits might still be floating around the world's oceans today, waiting to be eaten by some fish or oyster, and finally perhaps by one of us.

Because plastic wasn’t invented until the late 19th century, and its production only really took off around 1950，we have a mere 9. 2 billion tons of the stuff to deal with. Of that, more than 6. 9 billion tons have become waste. And of that waste，a surprising 6. 3 billion tons never made it to a recycling bin—the figure that shocked the scientists who published the numbers in 2017.

No one knows how much unrecycled plastic waste ends up in the ocean, the earth’s last sink. In 2015, Jenna Jambeck, a University of Georgia engineering professor, caught everyone's attention with a rough estimate： between 5. 3 million and 14 million tons of plastic waste each year just come from coastal regions.

Meanwhile, ocean plastic is estimated to kill millions of marine （海洋的）animals every year. Nearly 700 species, including endangered ones, are known to have been affected by it. Some are harmed visibly, stuck by abandoned things made of plastic. Many more are probably harmed invisibly. Marine species of all sizes, from zooplankton to whales, now eat microplastics, the bits smaller than one-fifth of an inch across.

“This isn’t a problem where we don’t know what the solution is,” says Ted Siegler, a Vermont resource economist who has spent more than 25 years working with developing nations on garbage. “We know how to pick up garbage. Anyone can do it. We know how to deal with it. We know how to recycle. ” It’s a matter of building the necessary institutions and systems, he says, ideally before the ocean turns into a thin soup of plastic.

28.Why does the author mention the Pilgrims in paragraph 1?

A.To prove plastic was difficult to invent.

B.To introduce what marine animals like eating.

C.To tell the Pilgrims contributed a lot to the marine protection.

D.To show plastic waste has a lasting effect on the ocean.

29.What’s the main trouble marine animals face according to the text?

A.Lacking protection.

B.Being stuck by plastics.

C.Being caught by humans.

D.Treating plastics as food.

30.What does Ted Siegler want to tell us in the last paragraph?

A.Some people don't know the solution of plastics waste.

B.Plastics will turn the ocean into a soup of plastic.

C.It’s time to take measures to deal with plastic waste.

D.People should avoid using plastics to protect the ocean.

31.From which is the text probably taken?

A. A biology textbook.B. A travel brochure.

C. An environmental report.D. A lifestyle magazine.

D

A study found wireless signals are able to pass through bags and suitcases to judge the sizes of dangerous metal objects and identify them. “These items could include weapons, chemicals, laptops and batteries for bombs，’’ the research team said on Tuesday.

Research suggested that Wi-Fi can now be used to estimate the volume of liquids such as water, acid, alcohol and other chemicals for explosive material. The study led by researchers at the Wireless Information Network Laboratory (WINLAB) in the School of Engineering showed a wireless device with two to three antennas (天线)that could be fitted in existing Wi-Fi networks.

The detection system analyzes what happens when wireless signals go through and bounce off objects or materials. The approach, which the paper states, works by separating the wireless interference (干扰)caused by two factors of objects—the material and shape. “Most dangerous objects such as weapons are usually metal or liquid, which have significant interference,” researchers said.

When it was tested on a backpack, the accuracy rate topped 95 percent. “But the accuracy dropped to about 90 percent when objects inside bags are wrapped. And the tech could save lives if used in museums, stadiums, theme parks or schools,” the team said, noting its design can inspect bags or luggage without being an exposure to privacy.

It uses channel state information (CSI) that is readily available in low-cost Wi-Fi devices. “This could have a great impact on protecting the public from dangerous objects,” said Yingying Chen, a co-author of the study, “There’s a growing need for that now. In large public areas, it’s hard to set up expensive screening equipment like what’s in airports. Manpower is always needed to check bags and we want to develop a method to try to reduce manpower. ’’

The peer-reviewed study, which recently won a best paper award at the 2018 IEEE Conference on Communications and Network Security, is now published online. “Future work will continue to focus on ameliorating the accuracy of identifying objects and imaging shapes and volumes，’’ researchers said.

32.What does paragraph 3 talk about?

A.The function of the technique.

B.The way the device works.

C.The principle the study is based on.

D.The benefit of the study findings.

33.What’s the advantage of the device?

A.It saves people in danger of natural disasters.

B.It passes through bags without damaging them.

C.It uses antennas to pick up networks’ signals.

D.It protects personal information from being disturbed.

34.Why did the researchers study the device according to Yingying Chen?

A. To save money and labour.B. To make full use of Wi-Fi.

C. To protect passengers' privacy.D. To research dangerous objects.

35.Which of the following can replace the underlined word “ameliorating” in the last paragraph?

A. Confirming. B. Improving.C. Discovering.D. Examining.