【简答题】阅读理解( 20 题 40 分) When people print a stamp, any error madeon a stamp raises its value to stamp collectors. A mistake on one inexpensive postage stamp has made the stamp worth a million and a half time...
【单选题】Passage Two How can a single postage stamp be worth $ 16,800? Any mistake made in the printing of a stamp raises its value to stamp collectors. A mistake on one in expensive' postage stamp has made th...