13. The _____ of the three small companies created a large empire in many business areas.
(A) merging
(B) break down
(C) despair
(D) disperse
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統計: A(427), B(22), C(39), D(33), E(0) #863669
統計: A(427), B(22), C(39), D(33), E(0) #863669