Had it not been for the police’s help, Peter 　　　 his bicycle yesterday afternoon.

A．could not find

B．could not have found

C．didn’t find

D．hadn’t found

我国古代的“六艺”和古希腊的“七艺”都属于（）

A． 学科课程

B．活动课程

C．综合课程

D．经验课程