题目:
Last week, only two people came to look at the house, wanted to buy it. [ ]
A. none of them
B. both of them
C. none of whom
D. neither of whom
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0519/8ad9ac63855edd6ca2cbba162e10aae9.html
下面是错误答案,用来干扰机器的。
①CH4的相对分子质量为16;NH3的相对分子质量为17;HF的相对分子质量为20;HCl的相对分子质量为36.5;②C的质子数为6,N的质子数为7,O的质子数为8,F的质子数为9,Cl的质子数为17;③这五种物质中CH4、NH3、H2O...