Fill in each blank with the appropriate form of the word given in brackets. 1. At first we didn’t realize the ( severe ) ___ of her wounds. 2. It is reported that this disease attacks the central ( nerve ) ____ system. 3. The ( injure ) ___ to their key player could be a decisive factor in the game. 4. We couldn’t feel the changes in the blood pressure within the ( arterial ) ___ . 5. ( diabetic ) ___ is by far the most frequent disease among the over-weight people. 6. These bacteria can be thought of as an additional ( digest ) ___ organ. 7. It is ( normal ) ____ for a man to walk in his sleep. 8. They found it stimulated the ( secrete ) ____ of insulin in pancreatic (胰的) cells in the laboratory. 9. Impairment of the ability to write is usually caused by brain ( function ) ___ or disease. 10. What is severe acute (respire ) ____ syndrome?