阿摩線上測驗
3. Alaska is at the western ________ of North America.
(A) width
(B) length
(C) extension
(D) extremity
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統計： A(17), B(16), C(22), D(41), E(0) #2088198
統計： A(17), B(16), C(22), D(41), E(0) #2088198
