2. 外语
  3. The most crucial problem any economic system faces is how to use its scarce resources.

The most crucial problem any economic system faces is how to use its scarce resources.

admin2012-09-29  68
问题 The most crucial problem any economic system faces is how to use its scarce resources.
选项 A、puzzling
B、difficult
C、terrifying
D、urgent
答案D
解析 crucial“至关紧要的”和urgent“紧急的”含义最接近。该句句意是“任何经济体系所面临的最至关紧要的问题是如何使用它稀少的资源。”puzzling，adj．(使)迷惑的，(使)为难的；terrifying， adj．使感到恐怖的。
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