阿摩線上測驗
27. What does the article imply about microbes?
(A) They are always dangerous to human beings.
(B) They may play a useful role in their own environment.
(C) Most of them come from dirty farms.
(D) They only infect humans when an animal is killed.
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統計： A(4), B(16), C(4), D(5), E(0) #3473949
統計： A(4), B(16), C(4), D(5), E(0) #3473949
