对进行胃镜检查的患者应采取的护理措施包括（）。 A.检查前禁食8小时 B.检查前半小

The computer was used in teaching. As a result, not only _____ , but the students become more interested in the lessons.[ ]

A. saved was teachers' energy              

B. was teachers' energy saved

C. teachers' energy was saved              

D. was saved teachers' energy

---Does Rita feel better today?

---Her condition has______improved, but it will be some time before she returns to school．

A．sooner or later

B．more or less

C．now and then

D．once in a while

餐巾花在台面上具有象形性、（）。要使每个花形都发挥其作用，餐厅服务员就要了解每个花形的最佳观赏位置。

学生在学习环境(包括物质环境、社会环境和文化体系)中所学习到的非预期或非计划性的知识、价值观念、规范和态度，这是非正式的、非官方的课程，可称为( )

A．直线式课程

B．螺旋式课程

C．显性课程

D．隐性课程