Travel planning involves hours and hours of searching for airfare, arranging transportat

—

— The round-trip air fare for a person is only $188.

A、What is the exact air fare?

B、How much does the airplane cost?

C、How much does the trip cost?

Many airlines are having less profit today although there are more demand for air travel.

A．Y

B．N

C．NG

Many airlines are having less profit today although there are more demand for air travel.

A．Y

B．N

C．NG

Our earth has been threatened by all kinds of pollutions.

Acid rain is a kind of air pollution which is hanging

over our heads and coming down from many different 【S1】______

ways such as rain and snow. It damages forests, lake and 【S2】______

rivers, buildings and even human health. Several

chemicals, including of sulfur dioxide, nitrogen 【S3】______

oxides and ozone, are involved in causing acid rain.

These chemicals either come directly from power

station chimneys and cars, and are formed from a 【S4】______

combination of pollutant gases. Sulfur dioxide is the

one chemical what is often associated with acid rain. 【S5】______

It is mainly emitted by large coal burning power

stations. It affect places thousands of miles away as 【S6】______

well as areas around the power stations. To prevent

more or worse environmental effects from acid rain, 【S7】______

we have short-term and long-term solutions. We should 【S8】______

just clean up our power station chimneys and car exhausts.

We should also change the way society thinks and reacts.

We need to conserve energy by decreasing efficiency. 【S9】______

We also need to change our way of transport, that is,

create a more efficient transport system which

depends less on private cars and more a good public 【S10】______

transport network. Everybody should work together

to save the world.

【S1】

To enjoy the scenery, Irene would rather spend long hours on the train travel by air.

A．as

B．to

C．than

D．while

Imagine a city transport system 20 years into the future and jam, air quality and energy efficiency may come to mind, but a driverless bus probably won't. Yet bus design experts, Capoco Design Ltd., are proposing an automated bus transport system that is economical, frequent and green. Responsible for about 65% of UK city buses over the past 15 years, Capoco are familiar with the demands of running urban transport systems. In 2002, Capoco commissioned a research project with the Royal College of Art, resulting in the mobilicity project, a research venture exploring urban travel in the future.

According to Capoco, the surprising thing about a city bus is that about 60% of the framing cost is spent on the driver, There's a drive to automate buses and therefore to halve (把……减半) the operating costs. The pods (容器)that make up Capoco's driverless bus are designed to run on electricity but can be adapted to use biofuel, or hydrogen(氢)in a fuel cell, and can be updated to run on the cleanest fuel available.

The vehicle navigation technology combines satellite positioning and a calibration (校准)system using magnets positioned in the road every few metres. The bus navigates using the onboard route map and calibrates every ten meters to ensure that the onboard system knows exactly where the bus is on the route.

The system would start with exclusive lanes using the sensors to remain in the lane but in the longer term the aim is to run the vehicles with traffic around them. There are already a lot of automatic guided vehicles running inside factories alongside people and forklift trucks on the same basis.

The next step is to build a trial system with two vehicles to prove the basic functionality of the vehicles. Next year, a pilot system of up to 12 vehicles could be introduced in a closed environment like a campus or an airport to test the installation further.

With no driver costs, you can run vehicles as small as five meters long and carrying 24 people, and you can run them more frequently and on more routes. Transport in the future could be as easy as hopping on a horizontal lift. For the nervous, the lift is probably a more reassuring vision than a driverless bus but, if the mobilicity system is tested successfully, driverless buses could become an everyday sight in the cities of the future!

What is said about the city transport system in the UK?

A．It has a long history.

B．It's green and economical.

C．More than half of the city buses will be replaced.

D．Driverless bus is still not realized now.