【题目】The days of having to carry a phone charger everywhere could soon be over. Michigan researchers have revealed a major breakthrough in harvesting energy from human motion. They say it could lead to smartphones powered for a week by the motion of a swipe(重击).

Michigan State University’s low-cost device, known as a nanogenerator, has already been tested. Scientists successfully operated an LCD touch screen, a bank of 20 LED lights and a flexible keyboard, all with a simple touching or pressing motion and without the aid of a battery. The groundbreaking findings, published in the journal Nano Energy, suggest “We’re on the path toward wearable devices powered by human motion,” said Nelson Sepulveda, associate professor of electrical and computer engineering and lead researcher of the project.

“What I foresee, relatively soon, is the capability of not having to charge your cell phone for an entire week, for example, because that energy will be produced by your movement,” said Sepulveda, whose research is funded by the National Science Foundation.

Electrical energy is created when the device is compressed by human motion. The completed device is as thin as a sheet of paper. The device used to power the LED lights was palm-sized, while the device used to power the touch screen was as small as a finger. Advantages such as being lightweight, flexible and low-cost could make it a promising and alternative method in the field of Mechanical-energy harvesting.

The device also becomes more powerful when folded. Sepulveda said, “You can start with a large device, but when you fold it once, and again, and again, it’s much smaller and has more energy. Now it may be small enough to put in a specially made heel of your shoe so it creates power each time your heel strikes the ground.”

Sepulveda and his team are also developing technology that would transmit the power generated by the heel strike to, say, a wireless headset.

1Who is Nelson Sepulveda?

A. The major researcher in the project. B. A professor of engineering.

C. The fund supplier of the research. D. A journalist writing for Nano Energy.

2The underlined word device in the 2nd paragraph is closest in meaning to ________.

A. keyboard B. smartphone C. screen D. machine

3From the passage we know that the nanogenerator ________.

A. becomes more powerful when kept flat

B. has already come into market in the USA

C. is lightweight and flexible though expensive

D. makes it possible to produce power by walking

4The purpose of the passage is to ________.

A. persuade people to buy the device B. bring in a new way to save energy

C. introduce a breakthrough in science D. honor Nelson Sepulveda for his contributions

【题目】书面表达
假设你是李华,你的英国朋友Peter来信向你咨询如何才能学好中文。请你根据下列要点写回信。
要点:(1)参加中文学习班(2)看中文书刊、电视(3)学唱中文歌曲(4)交中国朋友
注意:(1)词数100左右(2)可适当增加细节,以使行文连贯(3)开头语已为你写好
Dear Peter,
I'm glad to receive your letter asking for my advice on how to learn Chinese well……
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Best wishes,
Li Hua

【题目】Off-Peak fares are cheaper tickets for traveling on trains that are less busy, offering good value for money. The tickets may require you to travel at specific times of day, days of the week or on a specific route. Where there is more than one Off-Peak fare for a journey, the cheaper fare is called Super Off-Peak.

You can buy Off-Peak tickets any time before you travel, either online or at a local station. The travel restrictions for your Off-Peak ticket will depend on the journey you are making. The tickets must be used on the date shown on the ticket. For Off-Peak return tickets, related journeys must be made on the date shown on your ticket as well.

Children aged five to fifteen get a 50% discount for all Off-Peak fares. Up to 2 children under 5 years can travel free with each fare paying adult. Railcard holders get l/3 off all Standard Class Off-Peak fares. Senior, and disabled Railcard holders also get l/3 off all First Class Off Peak fares. Please note that minimum fares and time restrictions may apply to tickets bought with a Railcard.

If you plan on a train trip with friends or your family, you may get group travel discounts. Three or four can travel for the price of just two adults-leaving everyone more money to spend on the day out! If you are traveling in a group of ten or more at Off-Peak times, you may be able to obtain a further discount through the train company you are traveling with. Contact the train company directly and be aware that you may need to book tickets in advance.

For more information, please visit www.nationalrail.co.uk.

1An Off-Peak ticket differs from other tickets in .

A. its good value for money B. its convenience

C. the specific trains D. travel schedules

2Sarah, a Railcard holder, is traveling with her 12-year-old son and 4-year-old daughter. How much should they pay for the 6-pound Off-Peak fares?

A. £6. B. £18.

C. £7. D. £12.

3Apart from the Off-Peak fairs, you may also save money by .

A. becoming a VIP B. traveling at rush time

C. buying tickets online D. getting group travel discounts

4What type of writing is this text?

A. An announcement. B. A ticket booking guide.

C. A business report. D. A travel review.

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