送交者: weiqjweiqj 于 2006-09-29, 14:51:16:

回答: you are wrong, then D, E can not fly back to home..:) 由 wavelet 于 2006-09-29, 14:43:04:

• your math is fine. :-) - wavelet (59 bytes) 2006-09-29, 14:53:58 (105142)

加跟贴