—Mrs. Wang was sent to teach English in a poor mountain village last year.

—She said she would never forget some pleasant      while working there.

A．experiments

B．expressions

C．experiences

D．emotions

关于泪腺多形性腺癌的叙述，错误的是（）

A.多见于中青年

B.可由泪腺多形性腺瘤转化而来

C.眼球突向外上方

D.肿物质地坚硬，可有压痛

E.CT示肿物边界不清，形状不规则