在△ABC中，“A=π6”是“sinA=12”的（ ） A．充分不必要条件 B．必要

选词填空10分

People go to work in    小题1:   ways. Some people go to work on      小题2:    because they live           小题3:         their work places. Some people go to work by bike      小题4:      they live farther away, or they like     小题5:       bikes. They think it is    小题6:      for their health. Today more people have private(私人的)cars,so they can go to work by     小题7:         . In the south of China, many people even go to work bv         小题8:         because water is around their      小题9:     Will people go to work by plane? I     小题10:         so, if necessary. 

慢性胃炎HP阳性推崇的治疗是

A．铋剂+抗胆碱能药

B．质子泵抑制剂+两种抗生素

C．质子泵抑制剂+铋剂

D．奥美拉唑+西沙必利

E．H2受体拮抗剂+吗丁啉

在栽植较大乔木后，须在24小时内对其进行（）、（）。

表示寻址方式的主要方法有哪些？

简述氧腐蚀特征。