GDP(國內生產毛額)的故事
Too old to rock and roll and other stories有兩個非常聰明的經濟學天才青年,他們經常為一些高深的經濟學理論爭辯不休。一天飯後去散步,為了某個數學模型的證明兩位傑出青年又爭了起來,正在難分高下的時候,突然發現前面的草地上有一堆狗屎。甲就對乙說,如果你能把它吃下去,我願意出五千萬。五千萬的誘惑可真不小,吃還是不吃呢?乙掏出紙筆,進行了精確的數學計Summary Help your students read their way to better English with this new edition of the world's best graded readers - now with a new range of World Stories, fully revised Factfiles, more audio, and new tests. The new edition includes the original Bookwor...
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