听力原文： Negotiations to try to rescue Argentina's national airline, Aerolineas Argentinas, from bankruptcy resume Friday in Buenos Aires. The country's main workers’syndicate, Confederation General del Trabajo (CGT), is sponsoring talks among the airline's seven unions in hopes of reaching an agreement that will bring the carrier desperately needed cash. Spain has a majority stake in the troubled airline and has offered a $ 350 million financial rescue package in exchange for a cut in workers' benefits. But the airline technicians' union is so far refusing to accept the deal. The other six unions associated with the carrier have agreed to the package. Aerolineas Argentinas faces some $ 900 million in debts and is losing between $ 20-30 million a month. How many unions of the airline accept the financial rescue package offered by Spain?