题目

把5400000米改写成用“万”做单位的数是( )。A. 54万米 B. 5400万米 C. 540万米 答案：【答案】C【解析】直接舍去个级的4个0，然后在后面加上万字即可把这个数改写成用“万”做单位的数。5400000米=540万米。故答案为：C。—Didn't you have a good time at the party?—Of course I did.As a matter of fact, I had such fun that time seemed to________so quickly. [     ]A. go by  B. go awayC. go out  D. go over