Using the Rule of 70, if China's current growth rate of real GDP per person was 7 percent a year, how long would it take the country's real GDP per person to double?
【简答题】听下面一段材料,回答1-3题。 1. How much will the man pay in all? A. 30 dollars B. 13 dollars C. 60 dollars 2. Who will show the man to the room? A. Mr Bell B. A waitress C. A boy servant 3. When will the man leav...