irdless. Man, however much he may like to pretend the contrary, is part of nature. Can he escape a pollution that is now so thoroughly distributed throughout our world:
We know that even single exposures to these chemicals, if the amount is large enough, can cause extremely severe poisoning. But this is not the major problem. The sudden illness or death of farmers, farmworkers, and others exposed to sufficient quantities of pesticides is very sad and should not occur. For the population as a whole, we must be more concerned with the delayed effects of absorbing small amounts of the pesticides that invisibly pollute our world.
Responsible public health officials have pointed out that the biological effects of chemicals are cumulative (累积) over long periods of time, and that the danger to individual may depend on the sum of the exposures received throughout his lifetime. For these very reasons the danger is easily ignored. It is human nature to shake off what may seem to us a threat of future disaster. "Men are naturally most impressed by diseases which have obvious signs, " says a wise physician, Dr Rene Dubos, "yet some of their worst enemies slowly approach them unnoticed."
36. Which of the following is closest in meaning to the sentence "Man…… is part of nature" (Para. 1, Lines 3-4)?
(A) Man appears indifferent to what happens in nature.
(B) Man acts as if he does not belong to nature.
(C) Man can avoid the effects of environmental pollution.
(D) Man can escape his responsibilities for environmental effects of pesticides?
37. What is the author's attitude toward the environmental effects of pesticides?
(A) Pessimistic (C) Defensive
(B) Indifferent (D) Concerned
38. In the author's view, the sudden death caused by exposure to large amounts of pesticides _____.
(A) is not the worst of the negative consequences resulting from the use of pesticides
(B) now occurs most frequently among all accidental deaths
(C) has sharply increased so as to become the center of public attention
(D) is unavoidable because people can't do without pesticides in farming
39. People tend to ignore the delayed effects of exposure to chemical because _____.
(A) limited exposure to them does little harm to people's health
(B) the present is more important for them than the future
(C) the danger does not become apparent immediately
(D) humans are capable of withstanding small amounts of poisoning
40. It can be concluded from Dr. Dubos remarks that _____.
(A) people find invisible diseases difficult to deal with
(B) attacks by hidden enemies tend to be fatal
(C) diseases with obvious signs are easy to cure
(D) people tend to overlook hidden dangers caused by pesticides
Part III Vocabulary and Structure (20 minutes)
41. I would appreciate _____ it a secret.
(A) your keeping (C) that you keep
(B) you to keep (D) that you will keep
42. Mark often attempts to escape _____ whenever he breaks traffic regulations.
(A) having been fined (C) to have been fined
(B) to be fined (D) being fined
43. No matter how frequently _____, the works of Beethoven always attract large audiences.
(A) performing (C) to be performed
(B) performed (D) being performed
44. It is recommended that the project _____ until all the preparations have been made.
(A) is not started (C) not be started
(B) will not be started (D) is not to be started
45. I wish I ____ longer this morning, but I had to get up and come to class.
(A) could have slept (C) might have slept
(B) slept (D) have slept
46. We didn't know his telephone number, otherwise we _____ him.
(A) would have telephoned (C) would telephone
(B) must have telephoned (D) had telephoned
47. Turn on the television or open a magazine and you _____ advertisements showing happy, balanced families.
(A) are often seeing (C) will often see
(B) often see (D)
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