As follows:
圖片參考：http://i.imagehost.org/0727/ScreenHunter_02_Dec_20_11_56.gif
maths~~~`
2009-12-20 7:59 pm
回答 (2)
2009-12-20 8:18 pm
✔ 最佳答案
As follows:圖片參考：http://imgcld.yimg.com/8/n/HA00266150/o/700912200045713873385900.jpg
2009-12-20 12:18:49 補充：
Ans: A
2009-12-20 8:24 pm
the ans is A!!!!
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091220000051KK00457