临床可用于表面麻醉的药物有（）
A.普鲁卡因
B.利多卡因
C.丁卡因
D.布比卡因
E.卡波卡因
参考答案：B, C
They have a good harvest this year. Their rice harvest has _____ ten thousand tons. [ ]
A. come over
B. come out
C. come to
D. come on
《周易》是从谁开始的？（）
A.老子
B.鬼谷子
C.伏羲
D.姜子牙
