国际市场上，产品责任保险的承保人已大多转向采取（）作为承保基础，至今方兴未艾。
A.期内索赔式
B.期内发生式
C.期满索赔式
D.期满发生式
参考答案：A
The policeman told John not ____ so fast in the street. [ ]
A. drive
B. driven
C. driving
D. to drive
Lucy is a(n) student, she answers the teachers’ questions in her class.
A．more active; more actively
B．active; more actively
C．more active; the most actively
D．active; the most actively
