阿摩線上測驗
6. How long did it take from the 9/11 attack to the beginning of construction of 1 WTC?
(A) More than 14 years.
(B) Just short of a decade.
(C) A little less than five years.
(D) Nearly a quarter of a century.
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統計： A(90), B(100), C(283), D(40), E(0) #3170317
統計： A(90), B(100), C(283), D(40), E(0) #3170317
