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48 According to a new study, the continuing ____ of immigrants to American shores is encouraging business activity and producing more jobs with the supply of abundant labors.
(A)threat
(B)arrival
(C)removal
(D)selection

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Eric Huang (2018/03/10)
arrival 到達 of imm........


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48 According to a new study, the continu..-阿摩線上測驗