【简答题】Suppose that there are 10 million workers in Canada and that each of these workers can produce either 2 cars or 30 bushels of wheat in a year. a. What is the opportunity cost of producing a car in Can...
【简答题】( )1.Last year, I visited a chemical factory in Baise.There are about ________ workers in it. A.six thousands B.six thousand C.six thousands of D.six thousand of ( )2.Football is so ...