Peter，Helen，Catherine，Elizabeth和Levin想根据各自在环保方面的兴趣进行案例研究。阅读下面某杂志的专题报道摘要(A、B、C、D、E和F)，选出适合他们研究的最佳案例，并在答题纸上将相应选项的标号涂黑。选项中有一项是多余选项。

_____1.Peter: Reducing plastic and other wastes through DIY

_____2.Helen: Making use of the heavy traffic to produce electricity

_____3.Catherine: Building a community without private cars

_____4.Elizabeth: Building houses with recycled materials and energy-efficiency systems

_____5.Levin: Developing a new type of urban car which burns less gas

     A                                          B

Vauban

We know cars are terrible polluters, but would you give yours up? Vauban, a community in southwestern Germany, did just that, and its 5,000 citizens are doing fine. Most streets are free of vehicles, and there are generous green spaces and good public-transport links, including fast buses and bicycle paths.  When people must drive, they can turn to car-sharing clubs.  “All the citizens had the chance to plan their own city,” says Andreas Delleke, an energy expert, “and it's just how we wanted it to be.”    Denmark

During the period of gas shortage in the early 70s, Denmark decided to become self-sufficient ( 自足). So they began a few projects making smart investments along the way.

On the island of Samsoe, local families, fishermen and farmers bought wind turbines (涡轮机) to produce their own energy. Within seven years these turbines were completely paid for. And can you believe just one of wind turbines produces enough electricity for 600 households?

     C                                           D

Trey Parker and Matt Stone

Trey Parker and Matt Stone, creators of South Park, have built a sustainable castle with outer siding and inner flooring of recycled wood, recycled carpeting, high-efficiency boiler systems.

“I think more and more today, people are willing to make a statement about the Earth and how they want to protect it,” Michael Rath, home designer and builder says. "For high-end homes in this valley, this is entirely consistent with what they cost." P-NUT

Who doesn't love the name P-NUT—short for Personal-Neo Urban Transport? It's Honda's latest attempt to create a tiny footprint for a new urban vehicle.

This little P-NUT is unique. With a central driving position, the car is designed to move in tight settings. The  11-foot micro car will seat three with two rear-seat passengers behind the driver.

“The P-NUT concept explores the packaging and design potential for a vehicle designed for the city lifestyle,” said  Dave Marek, a Honda design Spokesman.

E                                        F

Israel Company

Is it possible that annoying rush hour traffic could become a source of renewable energy?

Israel's Technion Institute of Technology claims that if we placed special generators ( 发电机 ) under roads, railways, and runways—we could harvest enough energy to mass-produce electricity. A trial process has been used on a smaller scale, in dance clubs for instance, where the pounding feet of dancers light up the floor.

"We can produce electricity anywhere there is a busy road using energy that normally goes to waste," said Uri Amit, chairman of Israel's Technion Institute  of Technology.               Coffee

Coffee. Some of us can't start our day without it, and we don't mind waiting 10 minutes in line for it.

Here is the most effective tip to make you a superstar in environment protection.

Get a coffee machine for your home or office, or persuade your company into buying one.  (Tell them it will improve productivity. ) Skip the coffee line on the way to work and make something that is better-tasting and much better for your wallet.

Plus, you won't need those plastic cups or carrying cases that just get thrown away. Better yet, use your favorite travel mug.

Peter, Helen, Catherine, Elizabeth和Levin 想根据各自在环保方面的兴趣（61-65）进行案例研究。阅读下面某杂志的专题报道摘要（A、B、C、D、E和F），选出适合他们研究的最佳案例，并在答题纸上相应选项的标号涂黑。选项中有一项是多余选项。www.ks*5u.co

1.Peter: Reducing plastic and other wastes through DIY.

2.Helen: Making use of the heavy traffic to produce electricity.

3.Catherine: Building a community without private cars

4.Elizabeth: Building houses with recycled materials and energy-efficiency systems

5.Levin: Developing a new type of urban car which burns less gas

Scientists from South Korea are trying to convert（转化）sound waves into electricity. The research could lead to charging a cell phone from a conversation or providing energy to the nation’s electricity system generated（产生）by the noise during rash-hour traffic.
“Just as speakers transform electrical signals into sound, the opposite process —turning sound into a source of electrical power — is possible,” said Young Jun Park and Sang-Woo Kim, the joint authors of a new article in the journal Advanced Materials.
Harvesting energy from phone calls and passing cars is based on materials known as piezoelectrics. When bent, piezoelectric materials turn that mechanical energy into electricity. Lots of materials are piezoelectric: cane sugar, quartz （石英）and even dried bone which could create an electrical charge when stressed. For decades, scientists have pumped electricity into piezoelectric materials for use in environmental sensors, speakers and other devices.
Over the past few years, however, scientists have made dramatic advances in getting electricity out of piezoelectric devices. In an experiment, by using sound waves, which at 100 decibels（分贝）were not quite as loud as a rock concert （a normal conversation is about 60-70 decibels）, the South Korean scientists produced a mild electrical current of about 50 millivolts（毫伏）. The average cell phone requires a few volts to function, several times the power this technology can currently produce.
“But the real question is whether there is enough surrounding noise to act as a power source as for a cell phone,” said McAlpine, a leading scientist. A consumer probably wouldn’t want to attend a rock concert or stand next to a passing train to charge his cell phone. The South Korean scientists agree but they expect to get a higher power output as they continue their work.
【小题1】According to the two South Korean scientists, ________.

Scientists from South Korea are trying to convert（转化）sound waves into electricity. The research could lead to charging a cell phone from a conversation or providing energy to the nation’s electricity system generated（产生）by the noise during rash-hour traffic.

“Just as speakers transform electrical signals into sound, the opposite process —turning sound into a source of electrical power — is possible,” said Young Jun Park and Sang-Woo Kim, the joint authors of a new article in the journal Advanced Materials.

Harvesting energy from phone calls and passing cars is based on materials known as piezoelectrics. When bent, piezoelectric materials turn that mechanical energy into electricity. Lots of materials are piezoelectric: cane sugar, quartz （石英）and even dried bone which could create an electrical charge when stressed. For decades, scientists have pumped electricity into piezoelectric materials for use in environmental sensors, speakers and other devices.

Over the past few years, however, scientists have made dramatic advances in getting electricity out of piezoelectric devices. In an experiment, by using sound waves, which at 100 decibels（分贝）were not quite as loud as a rock concert （a normal conversation is about 60-70 decibels）, the South Korean scientists produced a mild electrical current of about 50 millivolts（毫伏）. The average cell phone requires a few volts to function, several times the power this technology can currently produce.

“But the real question is whether there is enough surrounding noise to act as a power source as for a cell phone,” said McAlpine, a leading scientist. A consumer probably wouldn’t want to attend a rock concert or stand next to a passing train to charge his cell phone. The South Korean scientists agree but they expect to get a higher power output as they continue their work.

1.According to the two South Korean scientists, ________.

A．sound waves can travel faster than electricity

B．new materials can send cell phone signals better

C．using cell phones adds to heavy traffic in rush hour

D．electricity and sound can be transformed into each other

2.We know from the passage that piezoelectric materials ________.

A．can produce electricity when stressed

B．are good at changing electricity into sound

C．can reduce the noise of passing cars

D．have been widely used in phones and cars

3.It can be inferred from the South Korean scientists’ experiment that ________.

A．it is hard to change sound into electricity under current conditions

B．it is impossible to make use of loud sound

C．the technology has a long way to go to have a practical use

D．the technology can power cell phones easily

4.What McAlpine doubts about the technology is ________.

A．the noise pollution                      B．the sound resource

C．the cost of piezoelectrics                 D．the safety of devices