听力原文： Aid workers in Mozambique say they're increasingly confident that they are coming to terms with the humanitarian crisis that follow the devastating floods. Helicopters and planes have been working flat-out to get supplies through to areas of need. The World Health Organization has warned that malaria has risen sharply after the flooding. This report from Jim Fish in Maputong: 'The skies over Mozambique have never been this busy. Relays of helicopters and aircraft crisscross to and fro ferrying food and supplies to the stricken areas. A fleet of more than 50 aircraft are now operating, averaging 200 flights per day. At one forward supply depot ill the town of Pamela, helicopters were arriving every few minutes, ferrying sacks of maize, and rice and beans out to where the flood survivors are congregated, But there are still pockets of people who have not received food or fresh water for over a week.' Aid workers in Mozambique say they are confident that ______.