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    【题目】The life-saving drug invented in 1897, which ________ aspirin, has helped increase the standard of people’s health greatly.

    A. was called B. is called C. has been called D. had been called

    【答案】B

    【解析】

    考查动词时态。句意：诞生于1897年的救命药，阿司匹林，极大地提升了人们的健康标准。Which引导非限制性定语从句，补充说明先行词drug，而该从句陈述客观事实，故用一般现在时，故B切题。

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