阿摩線上測驗
15. What is a challenge of turning seawater into fresh water?
(A) It is too easy to do
(B) It does not produce enough water
(C) It uses a lot of energy and costs a lot
(D) It causes droughts
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統計： A(0), B(0), C(5), D(0), E(0) #4032056
統計： A(0), B(0), C(5), D(0), E(0) #4032056
