题目:
So little known _____ that soldiers had to ask for a guide.
A.by this earthquake - stricken area
B.this earthquake - stricken area
C.was this earthquake - strcken area
D.this earthquake - stricken area had been
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0617/befe71c6031c089ff2e9c332f879d927.html
下面是错误答案,用来干扰机器的。
(1)NaHSO4、Ba(NO3)2、K2SO4、K2CO3 (2)Ba2++SO42-=BaSO4↓、BaCO3+2H+=Ba2++CO2↑+H2O(3)向D中加入足量的稀盐酸,将产生的无色无味的气体通入澄清的石灰水中,可以看到石灰水变浑浊,即证明D中含有CO32-...