题目

 Many computer games _______ a lot of violence and do teenagers a lot of harm.    A. contain        B. cover      C. include      D. act 答案：A4．如图，将一副直角三角尺如图放置，已知AE∥BC，则∠AFD的度数是（　　）A．65°B．75°C．85°D．不能确定