Exercise 5 - Routledge

The young woman now sitting in the dermatologist’s waiting room has an itchy rash. 2. The rash on her elbows and legs is due to an allergic reaction. 3. There are many allergies that cause rashes. 4. The existence of allergies was known long before scientists had any understanding of their nature. 5. The nature of allergy is still not fully ... ................
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