题目

His words puzzled me so much that I had a hard time trying to _____ what he really meant. A. make up      B. make off          C. make out          D. make for 答案:C6.现有等质量的甲、乙、丙三种金属,分别放入三份溶质质量分数相同的足量稀硫酸中,产生氢气的质量与反应时间的关系如图所示(已知甲、乙、丙在生成物中化合价均为+2价).则下列说法中正确的是(  )A.相对原子质量:丙>乙>甲B.生成氢气的质量:丙>乙>甲C.所得溶液的质量:乙>甲>丙D.消耗硫酸的质量:丙>乙>甲
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