Many Internet users make _____ most of t
题型：选择题
问题：
Many Internet users make _____ most of the half-price promotion and it is _____ good opportunity for online shopkeepers to get their names known.
A．a; the
B．/; the
C．the; /
D．the; a
题型：选择题
下列各组离子在指定环境下能大量共存的是
A．pH=1的溶液中Na+、S
、K+、MnO
B．pH=7的溶液中Al3+、Cl一、SO
、HCO
C．pH>7的溶液中Na+、AlO
、SO、K+
D．pH=0的溶液中Na+、K+、Fe2+、ClO