题目

— How do you like Art?        — Art? I like it so much. It’s one of .        A. the most exciting lessons    B. the most exciting lesson        C. more exciting lessons         D. more exciting lesson 答案：A一个开关同时控制两盏灯泡的亮与灭，则这两盏灯泡A.串联B.串联或并联C.并联D.无法判断