简述传播学研究的6个步骤。
参考答案:
选择课题、确定研究客体、研究设计、搜集资料、分析资料、结论。
When she came in, she found a stranger ______ at the back of the classroom with his eyes ______ upon her.
A.sitting; fixing
B.sat; fixing
C.seating; fixed
D.seated; fixed
下列检查中最先出现异常的是()
A.尿浓缩试验
B.酚红排泌试验
C.肌酐清除率
D.血尿素氮浓度
E.血肌酐浓度