The little girl was too scared a word. [ ]
A. not to tell
B. not to say
C. to say
答案:C
关闭上中切牙间隙已被接受的方法有()
A.ab
B.ac
C.ad
D.bc
E.cd
风心病二尖瓣狭窄伴快速房颤的患者,可给予下列哪些药物治疗()
A.β受体阻滞剂
B.洋地黄制剂
C.硝酸酯制剂
D.利尿剂
E.抗凝药物