类风湿关节炎的基本病理改变是
A．炎症细胞浸润B．B淋巴细胞大量增殖C．滑膜炎D．免疫复合物沉积E．关节骨性增生
参考答案：C
* * 毛滴虫运动细胞器是()
A．基染色杆
B．鞭毛
C．伪足
D．波动膜
E．轴柱
.----Do you know where Miss Green is?
----She the library to borrow some books.
A. has gone to B. had been in C. has been to
