题目

用黄豆发豆芽，1kg黄豆可以长出5kg黄豆芽。在这个过程中有机物总量      （    ） A．先少后多      B．不变           C．增多            D．减少 答案：D Accurately, my granny has got no hobbies at all ______ you think watching TV as one. A．if                B．while             C．after             D．unless