The old castle is well _____ visiting.A.worthyB.worthC.valuableD.reliable
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B解析试题分析：be worth doing值得（被）做……，句意：老城堡很值得参观。考点：形容词。
点评：本题需要把握worth和worthy两个词的用法。表示值得做……,worth用法为：be worth doing；而worthy用法为：be worthy to be done或be worthy of being doing。valuable“有价值的”和reliable“可靠的”与题意不符合。