The use of water referred in this passage is ______. The development of oceanic water power is important to America because ___

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问题 The use of water referred in this passage is ______.
The development of oceanic water power is important to America because ______.

选项 A、there is a severe shortage of coal and petroleum
B、it is the cheapest method of producing energy
C、petroleum supplies are being steadily drained
D、obtaining energy from ocean water are simpler

答案C

解析 见文章第一段的第一句,prospect意为“前展、展望”。根据该句知煤与石油储备消耗殆尽(running out)。由此可见,C选项正确。A选项不符合事实,现在的能源供给是充足的。B,D两个选项不符合原文的意思。
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