These proposals sought to place greater restrictions on the use and copying of digital information than ______ in traditional me

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问题 These proposals sought to place greater restrictions on the use and copying of digital information than ______ in traditional media.

选项 A、exist
B、exists
C、existing
D、to exist

答案A

解析 定语从句省略结构题。本题在greater...than中,than引导的是限定性定语从句,其先行词为restrictions,故定语从句中谓语动词用exist,相当于than (those which)exist in traditional media。
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