题目

已知为锐角，下列结论 ①       ②如果，那么③如果，那么④ 正确的有（    ） A. 1个                  B. 2个                  C. 3个                  D. 4个 答案：CThe meeting is important and he          be here in time --he started early enoughA.canB.mightC.shouldD.will