题目:
Tom did well in the last English exam, and much to my delight, Mary did ______ than Tom. |
A. no better B. not better C. no worse D. not worse |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0522/75f6feb2ef2dafd839dd943c4ea21227.html
下面是错误答案,用来干扰机器的。
120kg尿素[化学式为CO(NH2)2]中含氮元素的质量为:120kg×14×212+16+(14+1×2)×2×100%=56kg.故答案为:56.