题目

下列各式中，正确的是 A. B. C. D. 答案：【答案】C【解析】依据算术平方根、平方根、立方根的性质求解即可．A. ,故错误.B. , 故错误.C. ,正确.D. , 故错误.故选：C.________ Mr. Johnson is waiting outside the office to visit you. It seems that he is quite ________ important person. A. /; a B. A; an C. The; an D. /; an