题目内容：

A unique experience awaits you at the Centre for Alternative Technology on the edge of the beautiful Snowdonia National Park.

Over thirty years ago a group of people decided to try out alternative technologies. They chose a remote empty place, where rock used to be dug from the ground, as their base. Here experiments offering solutions to the world’s energy problems were carried out, and nowadays many of these ideas have become common practice. You can experience all these for yourself in just one day with us, and then take away what you have learned and put it into practice at home. Be assured it will help you save on your household energy costs!

Your visit to us begins with a ride up a steep 60-metre hillside on a railway which is worked by using the weight of water. At the top of the mountain you will enjoy beautiful views to the distant coastline. Then interactive displays show the power of wind, water and sun, while showing you what can be done in an ordinary household to reduce your influence on the planet.

There was no soil when the project was started, so we created our organic gardens using our own home-made soil. You can enjoy woodland walks or even notice spring flowers growing on the roofs of environmentally-friendly buildings.

In 2006 we opened our new eco-adventure playground for children, and we also run workshops where they can make models and become inventors of the future by putting wind, water or solar power into their own designs.

The Centre for Alternative Technology is open all year round and has good rail, road and cycle links. In fact we offer a 50% reduction on the admission price if you arrive by bicycle. There is wheelchair access for disabled visitors—telephone us in advance if you would like assistance.

1.What’s the main purpose of setting up the Centre for Alternative Technology?

A. To provide people with relevant experience.

B. To teach people how to reduce energy costs.

C. To show the hard condition for early experiments.

D. To encourage people to develop alternative technologies.

2.According to the passage, visitors can     .

A. learn to create their own organic gardens

B. appreciate the views of distant mountains

C. visit exhibitions of alternative technologies

D. enjoy woodland walks on the top of buildings

3.Where is the passage most probably from?

A. A literary essay.

B. A research report.

C. A historical novel.

D. A science website.