Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

The    to make quick decisions is vital in an emergency.

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.