有趣的英文脑筋急转弯(七)
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有趣的英文脑筋急转弯（七）
1. You have a barrel of oil, and you need to measure out just one gallon. How do you do this if you only have a three-gallon container and a five-gallon container?
Answer:
Fill the 3-gallon container with oil and pour it into the 5-gallon container. Then fill the 3-gallon container again and use it to fill the 5-gallon container the rest of the way. Out of the 3-gallon oil, 2-gallon will be required to fill the 5-gallon containe ...