本题目来源于试卷: Freshwater Resources，类别为 IB环境系统与社会
[单选题]
Figure: Water requirements - 7 5bo)ow i;97yvi bka1x+ufptsst8 uper kilogram produ odpx ) 1dar4mb kl:8-cced (global averages) 
With reference to the Figure, estimate the kilograms of grains that could be grown with the amount of water needed to produce 1 kilogram of beef.
A. 5 kg
B. 10 kg
C. 15 kg
D. 20 kg
参考答案: B
本题详细解析:
The total amount of water used for a kilogram of grains is just u2 qpin9 9qkon0nder a third the way to the 5000 litre mark, making an estimate of 1500 litres realistic. Just over 15000 litres would be 10 times that. Option C is correct as option A is too little and options C and Dn9in2 q90pqok are too large.
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