Step by Step 3000 第1册 Unit7:Transporation(2)

 　　Part 2. Green Transporation Festival.

　　Keywords. Green Transporation Festival, oil, environment, reduce, other kinds of fuels.

　　Vocabulary. hydrogen, propane, scooter, hybrid¹, ethanol.

　　A. You are going to hear a report on green transporation festival.

　　Supply the major points about the festival.

　　Energy saving vehicles were part of the Green Transportation Festival in Washington D.C. last month.

　　The vehicles are designed to reduce America's dependence² on oil and to help the environment.

　　The festival takes place at several American cities.

　　There are exhibits of cars, buses and motorized bicycles at the festivals.

　　Most of them use little gas or use another kind of fuel such as biodiesel, electricity, hydrogen, natural gas or propane.

　　People are also urged to consider simpler ways of getting around such as walking, biking and using public transportation systems.

　　Personal transporation vehicles called scooters are also gaining interest.

　　These methods all are avoid or reduce the use of gasoline and diesel³ fuel which are made from oil.

　　Individuals, students and car makers⁴ took part in the festival.

　　They wanted to show people what their so-called green vehicles could do.

　　Terms of students competed for prizes.

　　The United States has less than 5% of the world's population, but it uses about 25% of the world's oil.

　　More than half of the nation's oil is imported, most of it goes to transporation.

　　But festival organizers say progress in technology is making it possible for Americans to reduce their dependence on oil for transporation.

　　That's because the kinds of energy saving vehicles are increasing.

　　Hybrid vehicles, for example, combine a gasoline engine and a electric motor.

　　There are thousands on the road today.

　　They can reduce gasoline use by as much as 50%.

　　Vehicles powered by biodiesel fuel, electricity, ethanol, hydrogen or natural gas can reduce oil use by as much as 99%.

　　Festival organizers say that efforts to reduce oil imports in the United States will also have important environmental and public health benefits.

　　The burning of oil as fuel is responsible for a large share of the gases blamed for changes in the world climate.

　　When gasoline is burned in cars, it also pollutes the air and this leads to breathing problems, cancer and other health problems.

　　Organizers say that strong public demand for hybrids⁵ and vehicles that use other kinds of fuels could force carmakers to produce more such vehicles.

　　And that's the goal of the Green Transportation Festival.

　　B. listen again, focus on some details of the information.

　　Complete the statements.

1 hybrid   

n.(动，植）杂种，混合物

参考例句：

• That is a hybrid perpetual rose.那是一株杂交的四季开花的蔷薇。
• The hybrid was tall,handsome,and intelligent.那混血儿高大、英俊、又聪明。

2 dependence   

n.依靠，依赖；信任，信赖；隶属

参考例句：

• Doctors keep trying to break her dependence of the drug.医生们尽力使她戒除毒瘾。
• He was freed from financial dependence on his parents.他在经济上摆脱了对父母的依赖。

3 diesel   

n.柴油发动机，内燃机

参考例句：

• We experimented with diesel engines to drive the pumps.我们试着用柴油机来带动水泵。
• My tractor operates on diesel oil.我的那台拖拉机用柴油开动。

4 makers   

n.制造者，制造商（maker的复数形式）

参考例句：

• The makers of the product assured us that there had been no sacrifice of quality. 这一产品的制造商向我们保证说他们没有牺牲质量。
• The makers are about to launch out a new product. 制造商们马上要生产一种新产品。 来自《简明英汉词典》

5 hybrids   

n.杂交生成的生物体( hybrid的名词复数 )；杂交植物（或动物）；杂种；（不同事物的）混合物

参考例句：

• All these brightly coloured hybrids are so lovely in the garden. 花园里所有这些色彩鲜艳的杂交花真美丽。 来自辞典例句
• The notion that interspecific hybrids are rare is ill-founded. 有一种看法认为种间杂种是罕见的，这种看法是无根据的。 来自辞典例句