Therefore, "one Dalian native, two northerners, one Fuzhou native, two special students and three * * * party member" has a maximum of eight people, while the original title is seven people, so

(1) Two northerners (one from Dalian) and one from Fuzhou.

(2) Two special students

(3) three * * * party member.

Of the three items, only one person must repeat the calculation, which is a dual identity.

One and two excellent students are both from party member. See the overlapping part of (2) and (3). Two special students were born in party member, and two of them had dual identities, which contradicted the problem.

Party member produced by B *** is not always the overlapping part of (3) and (1) seen by southerners. Fuzhou people = * * * were born in party member, and one person has a dual identity, which is not contradictory to the topic.

C special students are all the overlapping parts of (2) and (1) seen by southerners. Fuzhou people = special students, and one person has a dual identity, which is not contradictory to the topic.

D Dalian people are the overlapping parts of special students (1) and (2). Dalian people are special students, and a person has a dual identity, which is not contradictory to the topic.