20. Studies of circadian rhythms can be applied to problems ranging from chronic insomnia in frequent transcontinental air travelers to workers in all-night plants being inefficient.

　　(A) to workers in all-night plants being inefficient

　　(B) toward workers in all-night plants being inefficient

　　(C) to workers in all-night plants who are inefficient

　　(D) to combat worker inefficiency in all-night plants

　　(E) to decreased efficiency among workers in all-night plants

　　21. Over five thousand years ago, archaeologists have discovered that Mesopotamian cooks were preparing chicken with coriander and tamarind, just as Egyptian cooks are still doing today.

　　(A) Over five thousand years ago, archaeologists have discovered that

　　(B) Over five thousand years ago, archaeologists had discovered that

　　(C) Archaeologists have discovered that, over five thousand years ago,

　　(D) Over five thousand years ago, as archaeologists have discovered it,

　　(E) Archaeologists have discovered, over five thousand years ago, that

　　22. According to Henry David Thoreau, the reason a majority is allowed to rule is not that it is more likely to be right, but because it is stronger.

　　(A) the reason a majority is allowed to rule is not that it is more likely to be right, but because it is stronger

　　(B) a majority is allowed to rule not because it is more likely to be right, but because it is stronger

　　(C) the reason for majority rule is not because they are more likely to be right, they are stronger

　　(D) the majority is allowed to rule because of its strength, not because it is more likely to be right

　　(E) the reason why the majority rules is that it is strong, not because it is likely to be right

　　23. Ideally, the professional career diplomat should help in the ongoing maintenance of an effective American foreign policy despite changes in administration.

　　(A) in the ongoing maintenance of

　　(B) in the maintaining of

　　(C) maintain

　　(D) to maintain and continue

　　(E) the maintenance of

　　24. Even astronomers were amazed at the success of the Neptune flyby, which produced a photograph of a previously undetected moon; this is likely to result in increased governmental support for the hitherto neglected U.S. space program.

　　(A) this is likely to result in

　　(B) that will cause

　　(C) and which is likely to result in

　　(D) this success is likely to result in

　　(E) it is likely to result with

　　25. Seeming to be one of the few corporations diversified enough to survive the recession, many shareholders ignored the drop in third-quarter profits and invested even more heavily in Emco.

　　(A) Seeming to be

　　(B) As if

　　(C) In that they seemed

　　(D) Although it seemed

　　Keys:

　　1. C 2. A 3. B 4. D 5. D 6. B 7. E 8. C 9. D 10. B 11. C 12. E 13. A 14. D 15. D 16. C 17. A 18. A 19. B 20. E 21. C 22. B 23. C 24. D 25. E

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