【题目】Could you imagine a future changed by technology ________ our lessons are taught by robots rather than human teachers?
A. at whichB. thatC. which D. in which
在线课程【答案】D
【解析】
试题分析：考查定语从句。a future是先行词，后面是定语从句，“在未来我们的课被机器人教而不是人类”。in the future在未来，是固定短语；先行词是future，故后面的定语从句用in which引导，故选D。