In the early 20th century, at the advent of the telephone, it was considered a superfluous instrument which would never be of pr

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问题 In the early 20th century, at the advent of the telephone, it was considered a superfluous instrument which would never be of practical use in the average household.

选项 A、appearance
B、popularity
C、dominance
D、consolidation

答案A

解析 advent出现,到来;appearance出现;popularity普及,流行;dominance优势,统治;consolidation巩固,合并。
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