The next time you’re exposed to the ________, your immune system launches an allergic reaction. 2. ________ is a sudden involuntary muscular contraction or convulsive movement. 3. Wherever possible, the most effective way of treating ________ is to avoid all contact with the allergen causing the reaction. 4. Bees pollinate (传授花粉) the plants by carrying the _______ from one flower to another. 5. By the end of 1999 the economy of the region had shrunk by 7 percent and the unemployment ratio had increased __________. 6. Eyebright (明目草)appears to make your immune system less ________ to airborne allergens. 7. Now diagnosed, Kirsten is on medication and uses an _______ to help her breathe. 8. He was so calm that even though the wind had begun to ________ quite a bit, he went to bed. 9. An ________ is a medical practitioner specializing in the diagnosis and treatment of allergies. 10. The answers to these questions will help you identify some of the reasons for the decision you made, to help you identify ________, or situations that may be difficult for you.