三角形两边长分别为3和6，第三边是方程x2﹣6x+8=0的解，则这个三角形的周长是[ ]
A．11
B．13
C．11或13
D．不能确定
答案：B
我国现行增值税法规规定，国外企业自行生产并无偿捐赠的应税货物可以不必缴纳进口环节的增值税。（）
Questions 11 to 18 are based on the conversation you have just heard.
A．She can’t afford the time for the trip.
B．She will manage to leave this month.
C．She has to change the time for the trip.
D．She hasn’t decided where to go next month.
