Task 1
Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C, and D. You should make the correct choice.
The process of recycling can give things not only a new life but, in some cases, a different one. Glass bottles, for example, can become drinking glasses.
First, the base is removed from the bottle. Then the bottle is turned upside down and the neck is attached to the base. The used bottle that would have been thrown away has now become a good-looking drinking glass.
It is not easy to make this happen, though. The biggest problem is how to attach the base to the neck of the bottle turned upside down.
Two South African businessmen, Sean Penrith and Philip Tetley, looked for a large glass manufacturer that could do it. But they had no luck. So they experimented for eight months. After many bottles were broken, they found a way.
Their company, called Green Glass, won a Business of the Year award in 1994. It was voted among the best new businesses in South Africa. The inventors received worldwide patent rights to own the process they developed.
More recently, the Green Glass idea has expanded into markets in Europe and the United States.
Green Glass U.K. says on its Website that it now makes 150,000 glasses per year. The factory in Cornwall, England, employs 10 people.
The company says it saves 90 percent of the energy normally used to make recycled glasses. The energy is saved because the glass is not melted. The glass is heated, however, to strengthen it.
The Green Glass process takes about three hours to make a bottle into a drinking glass. The bottle goes through seven machines, all designed and built by the company itself. Broken bottles cannot be used. So Green Glass U.K. says it must find bottles anywhere it can.
What is the main idea of the passage？

An Energy-saving way to recycle bottles into drinking glasses.
B. How to make drinking glasses.
C. Recycling gives used bottles a new life.
D. Green Glass received worldwide patent rights.