When the king heard the ________ answer from his son, a ________ smile appeared on his face．A.satisfying; satisfiedB.satisfied; satisfyingC.satisfactory; satisfyingD.satisfied; satisfactory
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A解析详解：句意为：当那位国王从他儿子那里听到令人满意的回答时，一丝满意的笑容浮现在他的脸上。satisfying“令人感到满意的”；satisfied“(人)满意的”。讲台挥洒一刻：在中学英语课本中出现了一些意为“令(使)人……”的动词。其现在分词表示主动意义，即“令人有某种感觉”；其过去分词含有被动意味，即“人被引起某种感觉”。常见的这类词有：interesting, interested; exciting, excited; frightening, frightened; surprising, surprised; tiring, tired; encouraging, encouraged; puzzling, puzzled; astonishing, astonished; worrying, worried; pleasing, pleased; moving, moved; satisfying, satisfied等。现在分词多用来指事或物，过去分词多用来指人、人的声音或表情。例如：a moving story(动人的故事), tiring work(累人的工作)，a disappointing man(令人失望的人), a disappointed man(失意人)，a satisfied smile(满意的微笑)。I was excited to hear the exciting news．我听到这令人振奋的消息感到兴奋。He was deeply moved by the moving story．那个动人的故事深深地打动了他。There was a disappointed look on his face．他的脸上有一种失望的表情。