Teachers are not happy when they find in class their students sending       to their friends.

A．letters

B．messages

C．notes

D．information

中世纪的教父哲学所哪种哲学思想影响最大（）？

A、伊壁鸠鲁主义

B、怀疑主义

C、新柏拉图主义

D、希腊自然哲学