阿摩線上測驗
7. Dozens of scientific groups all over the world have been _____ the goal of a practical and economic way to use sunlight to split water molecules.
(A) pursuing
(B) chasing
(C) reaching
(D) winning
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統計： A(0), B(0), C(1), D(0), E(0) #3443500
統計： A(0), B(0), C(1), D(0), E(0) #3443500
