Table schema:
CREATE TABLE table_name_54 (recopa_1994 VARCHAR, supercopa_1994 VARCHAR, team VARCHAR)

Question: Which Recopa 1994 has a Supercopa 1994 of 1st round, and a Team of argentinos juniors?
SQL: SELECT recopa_1994 FROM table_name_54 WHERE supercopa_1994 = "1st round" AND team = "argentinos juniors"