GRE

简答题select two answer choices that (1) complete the sentence in a way that makes sense and (2) produce sentences that are similar in meaning,回答题:
Beat Generation works byGinsberg and Burroughs led to obscenity trials,which led in turn to the___________ 0f rulesgoverning what could be publishedin the United States.

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D,E
Several of the choices make sense in context,but only liberalization (choice D)and relaxation(choice F)lead to sentences that mean the same  thing.