----- Nội dung ảnh ----- ``` Mark the letter A, B, C or D to indicate the word whose underlined part differs from the other three in the following questions. 1. A. antibiotic B. germ C. fitness D. organism 2. A. germ B. fitness C. bacteria D. organism 3. A. spread B. disease C. illness D. expectancy 4. A. examine B. poisoning C. bacterial D. infection 5. A. diameter B. recipe C. organism D. expectancy 6. Women have a longer life ________ than men. A. story B. membership C. history D. unhealthy 7. You should continue to lead a healthy life, such as eating a(n) _____________ diet, taking exercise and keeping ... ```