1.The content is too simple 2.Is not a sourcecode or document 3.lost some files 4.Descr iption is not detailed or not correct 5.Compressed file has password 6.Sourcecode duplicate or already exist

matlab课程考试的资料，题目、实现和结果 The final test program of learning content of MATLAB course

What is an activity in Android? A Activity performs the actions on the screen B Manage the Application content C Screen UI D None of the above