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bai1 một hình thang có đáy lớn 98 dm , đáy bé bằng 75% đáy lớn , chiều cao bằng 60% đáy bé . hãy tính diện tích hình thang đó
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IX. Read the text below and think of the word which best fits each space. Use only ONE word in each Along with jogging and swimming, cycling is (1) ………… of the best all-round forms of exercise. It can help to (2) ……… your strength and energy, giving you (3) ………… efficient muscles and a stronger heart. But increasing your strength is (4) ………… the only advantage of cycling. Because you (5) ……….. not carrying the weight of your body on your feet, it's a good (6) …………of exercise for people with painful feet or backs. However, (7) ………. all forms of exercise it's important to start slowly and build up gently. Doing (8) ………….. much too quickly can damage muscles that aren't used to working. If you have (9) …… doubts about taking up cycling for health reasons, talk to your doctor and ask (10) ……….. his advice.

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