题目内容：

英语智力难题.
难题如下：
Tomorrow is Jim"s birthday.He finds a note in his post-box.There is a sececet number on the note:2,1,19,11,5,20,2,1,12,12.What present will Jim get for his birthday?
A.basketball B.volleyball C.baseball

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2,1,19,11,5,20,2,1,12,12.为别对应字母b a s k e t b a l l
即.第二个字母是B.第一个字母是A..这样一个个推算下来.
那么就是A