Because only one of the five students' inquiries is correct, the student who won the first place can't be surnamed Li or Chen. This is because A and C are the same except for their surnames. If the surname Li is correct, then it is not a female classmate, not 13 years old, not Dongcheng District, so the surname Chen queried by C is correct and contradictory. If Zhang's surname is correct, the others are incorrect, that is, he is not a male classmate, not 1 1, 12 years old, not Haidian District and Dongcheng District. Then, they can only be female students, 13 years old, Xicheng District. In this way, the two items found by A are correct and obviously contradictory. Then, finally, there is d, d. Looking at A and D again, we know that the age is not 1 1 year, 13 years old, not from Dongcheng District or Xicheng District, but 12 years old, Haidian District.

To sum up, the students who won the first place: surnamed Huang, female, 12 years old, from Haidian District.

A: Then the first student should be from Haidian District, surnamed Huang, female, aged 12.