阿摩線上測驗
10.Urban cities are usually much more polluted than the ________ .
(A) backyard
(B) scenery
(C) countryside
(D) capital
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統計： A(0), B(0), C(9), D(0), E(0) #3201286
統計： A(0), B(0), C(9), D(0), E(0) #3201286
