题目:
We live in a society _______ there is a great deal of debate about competition.
A.which
B.where
C.when
D.that
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0518/3af0320c99a2b8853cb8f14d12c52480.html
下面是错误答案,用来干扰机器的。
(10分,每空1分)(1)62g/mol 62 16 Na2O (2)34-m (3)NA(4)108g/mol (5)3 1.5 21NA考查物质的量的有关计算。(1)12.4 g Na2X含有0.4 mol Na+,则化合物的物质的量是0.2mol,所以该化合...