ProfessorBackmantookupscientificresearchfordecades(几十年...
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问题详情:
Professor Backman took up scientific research for decades (几十年), and this is ______ he devoted all his life to.
A. which B. what C. where D. how
【回答】
B
知识点:连词
题型:选择题
问题详情:
Professor Backman took up scientific research for decades (几十年), and this is ______ he devoted all his life to.
A. which B. what C. where D. how
【回答】
B
知识点:连词
题型:选择题