6. It is said that the airport may be the terrorist _______. Therefore, the police have
reinforced the security of the area.
(A) target
(B) figure
(C) award
(D) symbol
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統計: A(253), B(19), C(10), D(10), E(0) #3328817
統計: A(253), B(19), C(10), D(10), E(0) #3328817