37. It is impossible for a single predator to destroy even a small area of forest mainly because _____.

A. plants will become poisonous if they are attacked.

B. plants have very good individual defence systems.

C. plants can protect themselves and share their defence systems.

D. plants can give out special smell to fight off their enemies.

36. According to the passage, which of the following statements about the Golden Wattle tree is NOT correct?

A. It is only poisonous while it is being attacked.

B. It has the ability to warn its neighboring plants of danger.

C. It fights off its enemies by producing poisonous chemicals.

D. An animal that eats too many of its leaves may be poisoned to death.

34. A. valuable　　　　　　 B. useful　　　　　　　　　　　　 C. selfish　　　　　　　　　　 D. precious

33. A. by　　　　　　　　　　 B. on　　　　　　　　　　　　　　 C. above　　　　　　　　　　 D. for

32. A. respect　　　　　　　 B. favour　　　　　　　　　　　 C. love　　　　　　　　　　　 D. fun

31. A. how　　　　　　　　　 B. because　　　　　　　　　　 C. why　　　　　　　　　　　 D. whether

30. A. shoulders　　　　　 B. feet　　　　　　　　　　　　　 C. hands　　　　　　　　　　 D. hair

29. A. enjoyed　　　　　　 B. found　　　　　　　　　　　　 C. disliked　　　　　　　　　 D. lived

28. A. worry　　　　　　　 B. puzzlement　　　　　　　　 C. regret　　　　　　　　　　 D. pain