It Is not easy for women to be a fighter (1) ______ . They have to meet key (2) ______ of physical fitness, mental strength, and intelligence. Pilots may also find it extremely uncomfortable to (3) ______ in a small cockpit up high in the sky during long-distance and dangerous flights. Many countries didn't allow female pilots until the 1990s. Women couldn't become fighter pilots until 2015 (4) ______ they could join the Air Force atter 1993. However, women have (5) ______ that they can perform as well as men in one of the toughest positions as fighter pilots. Many of the female fighter pilots are also great team leaders. 1. A. engineers B. firetighters C. surgeons D. pilots 2. A. requirements B. demands C. qualities D. quantities 3. A. fight B. live C. sit D. stay 4. A. said B. proved C. claimed D. told 5. A. assistants B. members C. workers D. leaders