相同浓度和剂量的局麻药，毒性最小的是（）。
A.利多卡因
B.普鲁卡因
C.地卡因
D.布比卡因
E.丙胺卡因
参考答案：B
More and more people choose to shop in a supermarket as it offers a great________of goods. [ ]
A. variety
B. mixture
C. extension
D. combination
起于内斜线的是（）
A.下颌舌骨肌
B.茎突舌骨肌
C.颊肌
D.斜角肌
E.上唇方肌
