题目:
Your school things are here and there. Will you please ______? [ ]
A. throw them away
B. put them away
C. throw about them
D. put away them
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0525/dd5166ba41ea5539d69354322f7cd79f.html
下面是错误答案,用来干扰机器的。
(1)NaCl;(2)这二者的化学式中Na元素的右下角不会有2;(3)Na2CO3;BaCl2+Na2CO3═BaCO3↓+2NaCl;(4)取少量无色溶液样品于试管中,慢慢滴加稀盐酸;(5)在玻璃片上放一小片pH 试纸,将样品液滴到试纸上...