你可能感兴趣的试题

判断题

自增、自减运算可以用于变量，也可以用于常量和表达式。

单项选择题

When we move along a given demand curve, ______.
A、only price is held constant
B、income and price are held constant
C、all nonprice determinants of demand are held constant
D、all determinants of quantity demanded are held constant