阿摩線上測驗
8. Around the world, the biggest threats to trees are agriculture and logging, followed by_________ with more and more people leaving the countryside to live in cities.
(A) urbanization
(B) expansion
(C) spread
(D) widening
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統計： A(4), B(1), C(0), D(0), E(0) #3757227
統計： A(4), B(1), C(0), D(0), E(0) #3757227
