医用酒精中，酒精与水的质量比是3:1，该医用酒精中的溶剂是___________
题型：填空题
问题：
医用酒精中，酒精与水的质量比是3:1，该医用酒精中的溶剂是____________，5%的碘酒溶液中溶质是____________。饱和溶液和浓溶液、不饱和溶液和稀溶液，均____________（选填“有”或 “无”）必然的联系。气体的溶解度随温度的升高而____________，随压强的增大而____________。
题型：填空题
The average price of commercial houses in our city has reduced by _____ 30 percent ,so we can buy one at _____ low price .
A．the; the
B． the; /
C． /; a
D．/; the