（）是将先进的通信和操作处理等物联网技术应用于农业领域，由信息、摇杆技术与生物技术支

正方形表示亚欧大陆，图中阴影能正确反映中国位置的是

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

健康教育处方具备的特点有（）

A.普及性

B.针对性

C.具体性

D.可操作性

E.通俗易懂性

信用卡按信誉等级分为无限卡、白金卡、金卡和普通卡。（　　）

我国对医疗器械产品实行什么样的管理？