A:向pH=9的NaOH溶液中不断加水
B:在久置的NaOH溶液中加入盐酸
C:分别向稀盐酸中加入等质量的Fe和Mg
D:在饱和的KNO3溶液中加入KNO3晶体
下列实验能达到目的的是()
连字成词。
苗 柏 事 滩 竹
沙____ 翠____ 松____ 麦____ 农____
______ earthquake happened on ______ morning of April 14th in Yushu, Qinghai. By far, over 2,000 people have died.