题目

In a society such as the United States or Canada, which has many national, religious and cultural differences, people highly value individualism—the differences among people. Teachers place a lot of importance on the qualities that make each student special. The educational systems in these countries show these values. Students do not memorize all possible basic knowledge. Instead, they work individually and find answers by themselves. There is often discussion in the classroom. At an early age, students learn to form their own ideas and opinions.In most Asia societies, by contrast, 下列物质放入足量水中，不能形成溶液的是( )A.白醋B.食用油C.白糖D.食盐