阿摩線上測驗
40. _______ of the area, the Crystal River begins in the mountain and winds more than 100 miles to the west.
(A) True gem
(B) A true gem
(C) It is true gem
(D) It is a true gem
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統計： A(23), B(65), C(22), D(37), E(0) #1781938
統計： A(23), B(65), C(22), D(37), E(0) #1781938
