结构中含有手性中心的药物是()。
A.盐酸左旋咪唑
B.阿苯哒唑
C.乙胺嘧啶
D.青蒿素
E.甲苯达唑
参考答案:A
It is not such the language_________the cultural background ___________ makes the book
difficult to understand.[ ]
A. but; that
B. nor; which
C. as ; that
D. like ; which
患者,女性,56岁,拔除右上后牙后伤口愈合良好,无明显炎症。半月后常感伤口疼痛不适,尤其触碰伤口颊侧时有明显疼痛,X线片检查无异常,常见原因是()
A.伤口内有残根
B.伤口内有肉芽
C.干槽症
D.骨尖
E.神经损伤