最佳答案:一.1 C 2B 3D 4D 5D二 1.2x*arctanx+12.2/√33.2e^tan2x*sec2x^24.2dx/√(1-4x^2)5 2x/(1+
收藏:
0
点赞数:
0
回答:
1
最佳答案:english coner is very popular in universities. almost every university has an eg
收藏:
0
点赞数:
0
回答:
1
最佳答案:1.就是在大学里他养成了熬夜的习惯.(It)It was in the university that he formed the stay-up habit.
收藏:
0
点赞数:
0
回答:
1