6.Although the unemployment rate reached an all-time high in mid-2009, it has fallen for four __________ months by ecember.
(A) consecutive
(B) connecting
(C) continual
(D) temporary
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統計: A(13), B(9), C(12), D(12), E(0) #667001
統計: A(13), B(9), C(12), D(12), E(0) #667001