1.  A. nature         B. danger           C. human         D. environment
2.  A. exist         B. species           C. effect         D. condition
3.  A. forest         B. water           C. destroy     D. industry

B. VOCABULARY AND GRAMMAR
Circle the best answer for each sentence.
1.  Many rare ____ of animals are in danger of extinction.
    A. species             B. classes         C. beings         D. pairs

2. People are destroying the environment by adding ____ to it.
    A. pollutes             B. pollutions         C. pollutives         D. pollutants

3. Many efforts have been made to protect ____ nature.
    A. danger             B. dangerous         C. endanger         D. endangered

4. Many species of animals are threatened and could easily become ____.
    A. disappeared         B. vanished         C. empty         D. extinct

5. Many animals are ____ for their fur and other valuable parts of their bodies.
    A. hunted             B. chased         C. run after         D. followed

6. They started a campaign to ____ smoking among teenagers.
    A. encourage         B. decrease         C. discourage         D. prohibit

7. Dinosaurs became ____ millions of years go.
    A. disappear        B. extinct         C. lost            D. endangered

8. The chemical ____ from cars and factories make the air, water and soil dangerously dirty.
  A. pollution                     B. polluted         C. pollutants         D. pollute

9. Human beings are ____ for the changes in the environment.
    A. account             B. faulty         C. blame         D. responsible

10. By cutting down trees, we ____ the natural habitat of birds and animals.
      A. hurt             B. would         C. damage         D. injure

11._______ aren’t effective anymore because insects have become resistant to them.
      A. Fertilizer         B. Pesticides         C. Herbicides         D. Composts

13. He is the singer about ____ I often tell you.
      A. that             B. who         C. whom         D. him

14. The concert ____ I listened last weekend was boring.
      A. to that             B. to which         C. for what         D. for which

15. That’s the girl to ____ my brother got engaged.
      A. which             B. who         C. whom         D. her

16. I like the village ____ I used to live.
      A. in that             B. in where         C. which         D. in which

17. I don’t know the reason ____ she hasn’t talked to me recently.
      A. on which         B. for which         C. of which         D. about which

18. The little girl ____ I borrowed this pen has gone.
      A. whose             B. from who         C. from that         D. from whom

19. The speech ________ we listened last night was information.
      A. to which         B. which to         C. to that         D. that

20. The boy to ____ I lent my money is poor.
      A. that             B. who         C. whom         D. B and C

21. The knife ____ we cut bread is very sharp.
      A. with that         B. which         C. with which         D. That

22. The authority gathered those villagers ____ they explained the importance of forests.
      A. who             B. whom         C. to whom         D. to that

23. Jean Fragonard was a French artist ______ portrait of children.

 A. whose paintings      B. who has painted     C. who painted     D. whose painted

24. The smoke from burning fuels causes pollution if it ______ into the atmosphere.

 A. releases         B. is released       C. will be released     D. released.

25. Portland, Maine, is ______ the poet Henry Wadsworth Longfellow spent his early years. 

A. where             B. it where        C. where is         D. which is where

26. Walkers can unwittingly damage the fragile environment ______.

 A. that the birds live   B. where the birds live in C. which live the birds D. in which the birds live

27. The school has been given 20 computers, half of ______ are brand new.

 A. that             B. those         C. them         D. which

28.The computer, ______ the memory capacity has just been upgraded, is among the latest generations.  

A. that                             B. whose         C. of which          D. which of

V. Fill in each blank with one appropriate word from the box.

represents           fueled     oversee      alarming lost          imported

      establish           reduced     covered      sought derived     cleared

The rate at which the deforestation of the world is proceeding is (29)_________. In the 1950 approximately 25 percent of the earth's land surface had been (30)_________ with forests, and less than twenty-five years later -the amount of the forest land was (31)_________ to 20 percent. This decrease from 25 percent to 20 percent from 1950 to 1973 (32)_________ an astounding 20 million square kilometers of forests. Predictions are that all, additional 20 million square kilometers of forest land will be (33)_________ by 2020.

The majority of deforestation is occuring in the tropical forests in developing countries, (34)_________ by the developing countries' need for increased agricultural land and the desire on the part of developed countries to import wood and wood products. More than 90 percent of the plywood used in the United States, for example, is (35)_________ from, developing countries with tropical rain forests. By the mid-1980s, solutions to this expanding problem were being (36)_________, in the form of attempts to (37)_________ an international regulatory organization to (38)_________ the use of tropical forests.