[单项选择]护士巡视病房过程中发现患者输液滴入不畅，检查有回血，局部无肿胀，护士应（）。
A. 抬高患肢
B. 用肝素冲管
C. 减慢输液速度
D. 调整针头位置
E. 更换针头重新穿刺

{{B}}The New Math on Campus{{/B}}
{{B}}Sexual Imbalance in Colleges{{/B}}
After midnight on a rainy night last week in Chapel Hill, N.C., a large group of sorority (女学生联谊会) women at the University of North Carolina squeezed into a basement bar. Bathed in a colorful glow, they splashed beer from pitchers, traded jokes and shouted lyrics to a Taylor Swift heartache anthem thundering overhead. As a night out, it had everything--except guys.
North Carolina, with a student body that is nearly 60 percent female, is just one of many large universities that at times feel weirdly like women’s colleges. Women have represented about 57 percent of enrollments at American colleges since at least 2000, according to a recent report by the American Council on Education. Researchers there cite several reasons: women tend to have higher grades; men tend to drop out in disproportionate numbers; and female enrollment