单选题 A new health report today warned of the ______ tendency for newly qualified doctors to refuse practices in the country.

【正确答案】 D
【答案解析】本题需选择修饰名词tendency的形容词或分词。名词和修饰它的分词之间如果是被动关系,就用过去分词;如果是主动关系,则用现在分词。因此答案是现在分词(D)worrying。