阿摩線上測驗
9. As the new virus can be transmitted in the form of small liquid particles when people cough, sneeze, or speak, it is very difficult to_____ the spread of the disease in crowded places.
(A) refrain
(B) contain
(C) sustain
(D) maintain
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統計： A(7), B(4), C(2), D(1), E(0) #3301130
統計： A(7), B(4), C(2), D(1), E(0) #3301130
