阿摩線上測驗
50. What is the main idea of the fifth paragraph?
(A) Large urban centers will be less polluted places to live in the future.
(B) ULEZ has already had a significant impact on air pollution in London.
(C) Zero-emissions zones are likely to replace programs such as ULEZ.
(D) London is a leader in the effort to reduce emissions in big cities.
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統計： A(50), B(16), C(10), D(62), E(0) #3195832
統計： A(50), B(16), C(10), D(62), E(0) #3195832
