Read the following passage and mark the letter A, B, C or D on the answer sheet to indicate the correct answer to each of the questions from 23 to 27.

Tropical forests have supplied us with many sorts of plants for food, medicine and industry. They can probably supply man much more. They also reduce floods and droughts, keep water clean, and slow down the Greenhouse Effect. However, the tropical forests are being destroyed to make rooms for things like farms and fields. Besides, forest fires are the most terrible destruction.

About 20 million hectares are lost annually - an area which is twice as big as that of Australia. The World Wildlife Fund (WWF) is working to protect and save the forests that are in danger, to plant new trees for fuel wood and to slow down the Greenhouse Effect. It encourages governments and people to do something for the sake of the tropical forests.

What is the main purpose of the writer when writing this passage?

Books are a wonderful source           knowledge and pleasure.

Read the following passage and mark the letter A, B, C or D on the answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 36 to 40.

Endangered species are plant and animal species (36)___ are in danger of extinction. The primary causes of species extinction are habitat destruction, commercial (37)  and pollution.The drainage of wetlands, cutting of forests, urbanization and road and dam construction have destroyed or seriously damaged natural habitats.

Plant and animal extinction leads to a loss of biodiversity. Maintaining biodiversity is important for us in many ways. Humans depend on species diversity to have food, clean air and water, and fertile soil for agriculture. In addition, we benefit greatly from many medicines and (38)         products that biodiversity provides.   (39)       , different conservation efforts have been (40)_____ in order to save endangered species.

The United Nations Educational, Scientific and Cultural Organization(UNESCO), was established in 1946.

He is not old enough to do the volunteer work.

“I would study English If I were you,” Mai’s friend said.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.