46. C) Its benefits outweigh the hazards involved.

47. C) Farmers and consumers may be affected by harmful bacteria.

48. A) Favorable.

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49. B) They can be dealt with through education.

50. A) He echoes Pay Drechsel’s opinion on the issue.

51. D) It is regarded as the center of a modern home.

52. B) No duplicate is to be found in any other place.

53. D) Social change

54. B) A place where women could work more efficiently.

55. B) Many of its central features are no different from those of the 1920s.

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