题目内容

To what does Singh attribute the success of the johads?

A. their cheap price
B. a higher than normal rainfall
C. the ability of villagers to sell excess water
D. giving control of the water to villagers

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Which of these methods did Madeod NOT make useof in Durban?

A. repairing water pipe
B. replacing toilets
C. installing water meters
D. building a new dam

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Which of the following did Sandra Postel mean by "waterconervation is where the big gains are to be made"(lines130-132)?

A. Water conservation is an opportunity for large profitsfor businesses.
B. Water conservation is the most effective method toaddress water shortages
C. Water conservation technology is still in need of manyimprovements
D. Water conservation is required by law in order toensure large gains

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