【简答题】Passage 1 What makes money valuable? Why is a piece of paper marked $ 10 worth more than one marked $1? You could say there is no reason. It’s true that a special kind of paper is used to make dollar ...
【简答题】If you have recently started collecting stamps, or are thinking about starting, you may be wondering if the hobby is expensive. Can you enjoy it with limited money? What if you have no money at all fo...