Directions: For each blank in the following passage, choose the best answer from the four choices given below. Mark the corresponding letter of your choice with a single bar across the square brackets on your machine-scoring ANSWER SHEET.

Explosions. Radiation. Evacuations. More than 30 years after Three Mile Island, the 21 crisis in Fukushima, Japan, has brought back some of the worst 22 surrounding nuclear power—and restarted a major debate about the merits and the 23 of this energy source. Does nuclear energy offer a path away from carbon-based fuels? Or are nuclear power plants too big a threat? It’s time to 24 myth from reality. One myth is that the biggest problem with nuclear energy is safety. Safety is certainly a critical issue, 25 the tragedy in Japan is making clear. But for years, the biggest challenge to sustainable nuclear energy hasn’t been safety, 26 cost.

In the United States, new nuclear construction was already slowing down even before the partial meltdown at Three Mile Island in 1979. The disaster 27 sealed its fate. The last nuclear power plant to come online started 28 power in 1996—but its construction began in 1972. Today, nuclear power remains 29 more expensive than coal- or gas-fired electricity, 30 because nuclear plants are so expensive to build. 31 are slippery, but a plant can cost $5 billion. A 2009 MIT study estimated that the cost of producing nuclear energy was about 30 percent higher than 32 of coal or gas.

Of course, cost and safety aren’t 33 Concerns about safety lead to extensive regulatory approval processes and add uncertainty to plant developers, calculations, both of 34 boost the price of financing new nuclear plants. It’s not clear how much these construction costs would 35 if safety fears subsided and the financing became cheaper—and after the Fukushima catastrophe, we’re unlikely to find out.

21. A. unfolding B. unyielding C. unwilling D. underlying

22. A. spirits B. crimes C. nightmares D. intentions

23. A. faults B. obstacles C. objections D. drawbacks

24. A. separate B. remove C. exchange D. prevent

25. A. if B. as C. yet D. although

26. A. only B. nor C. but D. or

27. A. regularly B. severely C. invariably D. merely

28. A. transcending B. dispatching C. delivering D. saving

29. A. exclusively B. considerably C. deliberately D. conversely

30. A. interestingly B. roughly C. mainly D. surprisingly

31. A. Surpluses B. Consumptions C. Deficits D. Estimates

32. A. those B. that C. both D. either

33. A. unreleased B. unmatched C. unrelated D. unmarked

34. A. which B. them C. that D. whom

35. A. remain B. fall C. flow D. sway

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