第12题: [单项选择]It is a (an) ______ truth that man is the only animal that has the power to speak and reason. A. worthy B. virtual C. universal D. indefinite 参考答案:C 答案解析:worthy意为“值得的”,指有充分价值的;virtual意为“实际上的”,指虽然没有实际事实、形式或名义,但是在实际上或效果上存在或产生的;universal意为“普遍的”,指适用于所有目的、条件或