7 Air travel in the US took its biggest ______since World War Ⅱ at the beginning of the pandemic in
2020. The number of passengers dropped from 2.3 million on Mar. 1 to a low of 87,500 on Apr. 14.
(A) increase
(B) dive
(C) slope
(D) shape
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統計: A(19), B(28), C(17), D(4), E(0) #2654253
統計: A(19), B(28), C(17), D(4), E(0) #2654253