问题详情

The author mentions "It takes 2,000 liters of water to grow a kilo of vegetables but 15,000 liters to produce a kilo of beef and people are eating more meat. "(Line 4~7, Para. 2) to______.
A．highlight the importance of new green revolution for our lives
B．urge people to take effective actions to solve water shortage
C．emphasize changing diets mainly contributes to water problems
D．warn people of the trouble of population growth in the future请帮忙给出正确答案和分析，谢谢！