Choose the correct temporal adverb: Newspapers became mainstream ______ the 19th century, while television dominated ______ the mid-20th century.

Choose the correct temporal adverb: Newspapers became mainstream the 19th century, while television dominated the mid-20th century.

A. before; since

B. during; in

C. after; before

D. since; during

答案解析

核心考点：时间副词辨析解题思路：时间段前用during表持续状态，具体时间点用in。before/since需搭配完成时态。选项分析：B为正确答案。during+世纪（长期过程），in+具体时间（mid-20th century为时间点）。A错在since后需用完成时。C逻辑矛盾（报纸不可能在19C后成为主流）。D语法错误（since需搭配完成时）。易错点：易混淆since（需主句完成时）与during（简单过去时）的用法区别。

正确答案：B

Choose the correct temporal adverb: Newspapers became mainstream ______ the 19th century, while television dominated ______ the mid-20th century.

答案解析

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Choose the correct temporal adverb: Newspapers became mainstream the 19th century, while television dominated the mid-20th century.