其最可能的诊断是
A．胆囊炎、胆囊结石
B．慢性胰腺炎
C．胰腺癌
D．壶腹癌
E．肝炎
参考答案：D
排序。
( ) I'd like some books.
( ) What books would you like?
( ) Can I help you?
( ) Here are some books on music.
( ) Some books on music.
( ) Sure.
合理编排教学内容的标准就是使教材达到（ ）。
A．结构化
B．一体化
C．网络化
D．标准化
