【简答题】If you think you are sick, you are no matter what anyone else says. On the other hand, if you believe in your , and if he tells that you are going to feel better, you probably will. The effect of the ...
【简答题】The market is a concept ( 概念 ). If you are growing tomatoes in yourbackyard for sale you are producing for the market. You might sell some toyour neighbors and some to the local managers of the superm...