造成师生间交往障碍,影响师生关系的主要原因是 [ ]
A.老师和学生生活阅历不同
B.老师和学生生活态度不同
C.师生之间的不对等的关系
D.师生之间年龄差异
答案:C
门静脉高压上消化道出血合并肝昏迷,下列各项中最适用于消除肠内积血,减少氨形成的是()
A.弱酸性液灌肠
B.生理盐水灌肠
C.弱碱性液灌肠
D.肥皂水灌肠
E.50%硫酸镁口服
Only those collections of sentences that consist of sentences connected in certain ways can be regarded as ______.
A. texts B. paragraphsC. topic sentences D. context