乳腺癌最常发生于 * * 的
A．外下象限B．外上象限C．内上象限D．内下象限E．中央部
参考答案：B
My chemistry is very poor. I _______ physics _______ math. [ ]
A. like, than
B. learn, than
C. prefer, to
D. would rather, than
急性肾衰竭多尿期尿量增多的机制不包括
A．肾小球功能逐渐恢复正常
B．抗利尿激素分泌减少
C．肾小管阻塞解除
D．新生肾小管上皮细胞功能尚不成熟
E．渗透性利尿
