发散思维的类型包括（）。

A.逆向思维法

B.横向思维法

C.纵向思维法

D.颠倒思维法

E.辐集思维法

_______ , I lost heart in English learning, but my teacher often said to me, “Keep on working hard and you’ll succeed      ”.                               

A．At a time, in time

B．At a time, on time

C．At one time, in time

D．At one time, on time