10.(江苏省南京市2010届高三学情分析样题) In 1948, three American scientists invented transistor, which is small electronic device to control an electric current. A. the; a B. a; a C. the; the D. a; the 答案 A 【查看更多】

 

题目列表(包括答案和解析)


同步练习册答案