血滞经闭、痛经、产后瘀阻，瘕瘕，跌打肿痛
A．青蒿B．蒲公英C．黄连D．赤芍E．青黛
参考答案：D
I found __not easy to learn English well. [ ]
A. that
B. this
C. it
大学生怎样预防传染病？
