2011年大学英语六级模拟试题及答案（4）

Passage Two

Questions 29 to 31 are based on the passage you have just heard.

29. A) It limited their supply of food.                      C) It destroyed many of their nests.

      B) It made their eggshells to fragile.                  D) It killed man baby bald eagles.

30. A) They found ways to speed up the reproduction of bald eagles.

      B) They developed new types of feed for baby bald eagles.

      C) They explored new ways to hatch baby bald eagles.

      D) They brought in bald eagles from Canada.

31. A) Pollution of the environment.                  C) Over-killing by hunters.

      B) A new generation of pest killers.             D) Destruction of their natural homes.

 Passage Three

Questions 32 to 35 are based on the passage you have just heard.

32. A) Why people hold back their tears.                    C) How to restrain one's tears.

      B) Why People cry.                                             D) How tears are produced.

33. A) What chemicals tears are composed of.

      B) Whether crying really helps us feel better.

      C) Why some people tend to cry more often than others.

      D) How tears help people cope with emotional problems.

34. A) Only one out of four girls cries less often than boys.

     B) Of four boys, only one cries very often.

     C) Girls cry four times as often as boys.

     D) Only one out of four babies doesn't cry often.

35. A) Only humans respond to emotions by shedding tears.

     B) Only humans shed tears to get rid of imitating stuff in their eyes.

     C) Only human tears can resist invading bacteria.

     D) Only human tears can discharge certain chemicals.