题目

人体新陈代谢过程中，需要量最多的无机物和有机物是（   ） A．无机盐和蛋白质                         B．水和蛋白质 C．无机盐和糖类                           D．水和糖类 答案：B— The food here is nice enough. — My friend ______ me a right place. A. introduces             B. introduced         C. had introduced       D. was introducing