题目内容
Professor Smith gave us a speech last month, ______he expressed his concern about the current global economic trends.
A. to which B. in which
C. with which D. for which
B
【解析】
试题分析:句意:史密斯教授上个月给我们做了一次报告,在报告中他表达了他对目前全球经济趋势的担忧。此处是非限制性定语从句,表示在这次报告中,选B。
考点:考查定语从句
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