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In Kenya’s vast Tsavo National Park, breeding herds of elephants are a common sight, the new babies hurrying to_______ their mothers.

A. keep track of B. keep up with

C. keep in touch with D. keep away from

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Car companies are developing vehicles that will plug into electric sockets, ust like many laptops, digital cameras, cell phones and Mp4 do. Called “plug-in vehicles”, these cars will get most of their power from electricity. Their drivers won't have to stop at gas stations as often as usual.

The technology is more than just cool. In our car-filled world, plug-in vehicles could reduce the amount of gas we use, which keeps rising in cost now and then. Besides, driving around in these vehicles may even help the environment. Gas-burning cars produce a lot of greenhouse gas, which causes global warming.

The first company-produced plug-in vehicles could hit the roads by 2020. But engineers still have a lot of work to do to make the technology practical and inexpensive.

Batteries are the biggest challenge. In the plug-in-vehicle world,Li-ion(锂离子)batteries are getting the most attention. These batteries can store a large amount of energy in a small package, and they last a longer time between charges. Li-ion batteries can fit laptops, cell phones, heart instruments and other similar pocket ones.

But because cars are so big and heavy, it would still require a suitcase-sized Li-ion batteries to power about 12km of driving. What's more, the batteries are much expensive.

“A car filled with batteries could go a long distance,” says Ted Bohn, an electrical engineer in Chicago. “But it couldn't pull any people, and it would cost $100,000.” So researchers need to work out how to make batteries smaller and cheaper, among other questions.

“The answers don't exist yet, ” Bohn says, “As a kid, I thought someone someplace knows the answer to everything. All of these questions haven't been decided. That's what engineering is about-making a guess, running tests and getting fine results.”

1.According to the passage, the main problem of the new car is ______________.

A. the developing B. the speed

C. the appearance D. the batteries

2.Which is true according to the passage?

A. The “plug-in vehicles” will use electricity completely as driving power.

B. The new technology will help protect our environment.

C. The technology of using electricity as driving is quite practical now.

D. The biggest challenge of the new technology is that it will cost us more energy.

3.How does Bohn feel about the future of the technology according to the last paragraph?

A. Confident B. Puzzled.

C. Worried. D. Disappointed.

4.According to the passage, the new technology is facing the problems except that_______.

A. the new technology cannot come into use at present

B. the cost of the new technology is quite high

C. the government won't support the technology

D. the size of the batteries is too big at present

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科目:高中英语 来源:江苏省如皋市2016-2017学年高二英语选修六Unit 3 Understanding each other练习 题型:阅读理解

An investigative study of Black Friday, led by West Chester University Professor Gina Castle Bell, observed themes of consumerism but also observed the themes of a happy holiday. The researchers found through Black Friday people celebrate, plan, bond, and build traditions together.

For me my Black Friday always begins and ends on a living room floor littered with newspaper ads. There, late on Thanksgiving night, my family collectively holds a strategy session. Later, we race to early bird specials, wait with strangers in lines sharing stories of past Black Fridays, take a long relaxing lunch full of family banter(戏谑), get Christmas decorations, stop into a Cheesecake Factory bar to see the dramatic end of a football game, get a caffeine-high from Starbucks Christmas drinks, and end the shopping at a torn apart Old Navy(美国服装品牌), digging to find late available basics like socks. Finally, exhausted but contented, we collapse back on that living room floor, still littered with ads, where we drink hot cocoa, watch a Christmas movie, and plan to hang the new decorations.

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For them the crowds, the rush, and the difficulty all enhance(提升) Black Friday—similar to the way crowds enhance movie opening nights, the rush enhances music festivals, and difficulty enhances the experience of camping for other types of people. Those crazy elements transform the events into what consumer researchers call a “collectible experience”. Collectible experiences are not always pleasant but they are memorable and meaningful to those games for them.

There seems to be a mad rush in the media to analyze Black Friday. Yet, every analysis misses the point that Black Friday, which though on the surface seems like just evil consumerism, is actually, for some, quite a meaningful, ritualistic(例行的) experience.

Maybe this happy holiday is not for you. Maybe you think it is silly or even disgusting that Americans choose to bond through, over all other options, shopping. But what you cannot deny is that Black Friday has become something bigger than deals. It has become a part of a collective and personal culture, where many shoppers are not trying to avoid the trouble and craziness of the day; instead, they are trying to strategically and happily dive into it. And, right now, on living room floors all across America, families are planning how to get the most out of their yearly ritual.

1.It can be inferred from Paragraph 2 that     .

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B. many shops offer free drinks to customers when they watch football games

C. the author purchases cheap socks and the room floor collapses under their weight

D. the author stops shopping at an old and shabby store late on Thanksgiving night

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A. Waiting with strangers in lines. B. Racing to early bird specials.

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4.What could be the best title of the passage?

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B. An Introduction to Black Friday

C. Widespread Criticism of Black Friday

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文中共有10处语言错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。

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