提示:清宫二次后随访,9周后β-HCG仍高于正常
应诊断为
A.胚胎残留
B.人流不全
C.绒癌
D.侵蚀性葡萄胎
E.异位妊娠
F.药流不全
参考答案:D
—Why do you hope to visit Hawaii some day?
—__________ it has beautiful beaches. [ ]
A. Though
B. Or
C. Because
D. So
简述网络营销的八大职能。