2019年公共英语四级阅读练习题（6）
Industrial safety does not just happen. Companies 41 low accident rates plan their safety programs, work hard to organize them, and continue working to keep them 42 and active. When the work is well done, a 43 of accident-free operations is established 44 time lost due to injuries is kept at a minimum.?
Successful safety programs may 45 greatly in the emphasis placed on certain aspects of the program. Some place great emphasis on mechanical guarding. Others stress safe work practices by 46 rules or regulations. 47 others depend on an emotional appeal to the worker. But, there are certain basic ideas that must be used in every program if maximum results are to be obtained.?
There can be no question about the value of a safety program. From a financial standpoint alone, safety 48 . The fewer the injury 49 , the better the workman's insurance rate. This may mean the difference between operating at 50 or at a loss.
41. [A]at [B]in? [C]on [D]with
42. [A]alive [B]vivid? [C]mobile [D]diverse
43. [A]regulation [B]climate?[C]circumstance [D]requirement
44. [A]where [B]how? [C]what [D]unless
45. [A]alter [B]differ? [C]shift [D]distinguish
46. [A]constituting [B]aggravating[C]observing [D]justifying
47. [A]Some [B]Many? [C]Even [D]Still
48. [A]comes off [B]turns up?[C]pays off [D]holds up
49. [A]claims [B]reports? [C]declarations [D]proclamations
50. [A]an advantage [B]a benefit [C]an interest [D]a profit
参考答案：DABAB CDCAD?
