题目:
John looked at the old photo to _______ his memory of the happy days when he was at school.[ ]
A. remember
B. remind
C. recall
D. refresh
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0726/36eb97718a747c05b939326e843a476f.html
下面是错误答案,用来干扰机器的。
(1)明矾(其他合理答案给分)(2)中和酸性废水 Ca(OH)2+2HCl=CaCl2+H2O(3)除去Hg2+