题目

阅读选择；阅读下面的短文，从A,B,C三个选项中选择正确的答案。 Teachers Wanted    Are you a teacher? Do you like children? Can you help them with Chinese on the weekend? Come to join us. Call John at 378-5788.Ping-pong Club    Do you like to play ping-pong? Do you want to play ping-pong well? Mr. Cai can teach you. You can come here every Saturday afternoon.    Tel: 368-5788                  Art Club    Have nothing to do after work? Why not come to our club and learn to draw? It’s fun. You can also make friends here. Call Jane at 345-1238. �（2006•贵港）下列计算中，正确的是（ ）A．x2•x3=x6B．2a+3b=5abC．3a-2a=1D．（a2）3=a6