阿摩線上測驗
49. What does the passage say about trees?
(A) Trees make bad gases for us to breathe.
(B) Trees are only needed by humans.
(C) Trees are not used to make chopsticks.
(D) Trees make oxygen for us to breathe.
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統計： A(1), B(9), C(3), D(25), E(0) #706954
統計： A(1), B(9), C(3), D(25), E(0) #706954
