It is ______ my dictionary. [ ]
A. a photo to
B. a photo of
C. photos to
D. photos of
答案:B
--What’s this ______ English? --It’s a pencil.
A.at
B.in
C.of
D.on
下列选项中不属于局部麻醉的是()。
A.表面麻醉
B.局部浸润麻醉
C.区域阻滞
D.骶管阻滞
E.神经阻滞