Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 36 to 40.

Coal, oil, and natural gas supply modern civilization (36)______ most of its power. However, not only are supplies of these fuels limited, but they are a major source of pollution. If the energy demands of the future are to be met without seriously harming the environment, existing (37)______energy sources must be improved or further explored and developed. These include nuclear, water, solar, wind, and geothermal power, as well as energy from new, (38)______ types of fuels. Each of these alternatives, however, has advantages and disadvantages.

Nuclear power plants efficiently produce large amounts of electricity without polluting the atmosphere; however, they are costly to build and maintain, and they pose the daunting problem of what to do with nuclear wastes. Hydroelectric power is (39)______ and environmentally safe, but impractical for communities located far from moving water. Harnessing energy from tides and waves has similar drawbacks. Solar power holds great promise for the future but methods of collecting and concentrating sunlight are as yet (40)______, as are methods of harnessing wind power.

(36)

Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.

“I will help you with the housework”, Mai said to me.

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He did not work hard. He failed the exam.

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The demand was so great. They had to reprint the book immediately.

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Only Mary scored high enough to pass this test.

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You will never eat there at the weekend unless you have made a reservation.

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The Matrix was released in 1999. It stars Keanu Reeves.

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Cats is one of the longest-running musicals in Britain. It was written by Andrew Lloyd Webber.

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The sculpture represents the biblical King David. It was carved in the early 1500s.

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You can see Velazquez in this painting. He is standing in the background.

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A picture was stolen by art thieves. It was painted by Munch.