阿摩線上測驗
29. What is the main background of the Great Exhibition?
(A) Building the Crystal Palace
(B) One new technological invention
(C) The time of the Industrial Revolution
(D) Trying to attract famous people
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統計： A(15), B(12), C(89), D(4), E(0) #3315088
統計： A(15), B(12), C(89), D(4), E(0) #3315088
