题目

用黄豆发黄豆芽，1千克黄豆可发7千克黄豆芽，在这个过程中，有机物总量 A.逐渐增多       B.逐渐减少        C.不变           D.先少后多 答案：BDo you know ________?A. what he happened B. what the matter is with himC. what happened to him D. what did he happened