题目

158. It is said in the book that Thomas Edison _____ the world leading inventor for about sixty years.   A. would be              B. has been     C. was            D. had been 答案：C3．如图，∠A=75°，∠1=75°，∠3=105°（1）AM与EN能平行吗？为什么？（2）AB与CD能平行吗？为什么？