ProfessorBackmantookupscientificresearchfordecades(幾十年...
來源:國語幫 3.07W
問題詳情:
Professor Backman took up scientific research for decades (幾十年), and this is ______ he devoted all his life to.
A. which B. what C. where D. how
【回答】
B
知識點:連詞
題型:選擇題
問題詳情:
Professor Backman took up scientific research for decades (幾十年), and this is ______ he devoted all his life to.
A. which B. what C. where D. how
【回答】
B
知識點:連詞
題型:選擇題