試題詳解

42. Which of the following is TRUE about water used for growing crops?
(A) About 70% of the Earth’s water is used to grow crops.
(B) About 60% of the fresh water used for crops comes from underground.
(C) About 42% of all fresh water is wasted in the process of growing crops.
(D) It takes about 1000 liters of fresh water to grow every ton of wheat.