Tìm các số nguyên thỏa mãn x và y x/8=y/12 và 2x+3y=13

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CHỈ VIỆC KHOANH CHÒN THÔI^^^ III. Read the passage and complete the passage with the best answer. You have a headache and you sneeze and cough. Your nose is all stuffed up, and it keeps running, so you have to blow it every few minutes. You know by these ______(21) that you have a cold, and you feel completely ______(22). You are not sure if you will live through the day. Everyone suffers ______ (23) the common cold at some time or other. It isn't a serious______(24), but over a billion dollars a year is spent on different kinds of cold medicine every year. This medicine can relieve the symptoms. That is, it can make you cough ______(25), make your head less intense, and stop your nose ______(26) for a while. However, it can cure your cold. So far, ______(27) no cure for the common cold and no medicine to prevent it. ______(28) there is no cure or preventive medicine for colds, people have all kinds of ideas about ______(29) to prevent and treat colds. Some people think that if you eat a lot of onions, you won't each cold. ______(30) say that you should avoid getting wet and chilled, or you will catch cold. However, this is apparently not so. 1. A. diseases B. fevers C. cures D. symptoms 2. A. sad B. hungry C. miserable D. thirsty 3. A. from B. of C. with D. about 4. A. misery B. illness C. headache D. wrong 5. A. less B. fewer C. much D. more 6. A. walking B. jogging C. running D. flowing 7. A. it is B. there is C. they are D. there are 8. A. Although B. Despite C. In spite D. But 9. A. what B. why C. where D. how 10. A. Other's B. Another C. Others D. Other