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第二篇 Diabetes(糖尿病)and Eye DamageOver 2 million Canadians have diabetes.It is the leading cause of blindness in North Americans under 65 years of age.Diabetes is a condition where the body either cannot produce enough insulin(胰岛素)or cannot respond pro
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Influenza(流感)Influenza has been with us a long time. According to some Greek writers___1___ medical history, the outbreak of 412 B. C. was of influenza. The same has been suggested of the sickness___ 2___swept through the Greek army attacking Syracu