题目内容
16.It was 1897________ a European chemist called Dr.Felix Hoffman produced aspirin from this chemical.( )A. | that | B. | while | C. | when | D. | in which |
分析 那是1897年,一位欧洲的名叫Felix Hoffman的博士药剂师从这种药品中制造出了阿司匹林.
解答 答案:C
空格后面的定语从句缺少时间状语,故用关系副词when引导定语从句.若要用A构成强调句,1897 前面要加介词in.
点评 本题考查定语从句,首要先分析句子成分,然后根据句子结构确定正确答案.

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