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2 năm trước
Đơn thức thu gọn là gì? Học thuộc! Cho VD về đơn thức thu gọn, chỉ rõ phần hệ số, phần biến của đơn thức đó.
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Read the following passage, then choose the correct answer to questions 31- 35 Ted Robinson has been worried all the week. Last Tuesday he received a letter from the local police. In the letter he was asked to call at the station. Ted wondered why he was wanted by the police, but he went to the station yesterday, and now he is not worried any more. At the station he was told by a smiling police-man that his bicycle had been found. Five years ago, the policeman told him, the bicycle was picked up in a small village four hundred miles away. It’s now being sent to his home by train. Ted was most surprised when he heard the news. He was amused too, because he never expected the bicycle to be found. It was stolen twenty years ago when Ted was a boy of fifteen. 31. Ted was worried because_________. A. he received a letter B. he went to the police station yesterday C. the police would catch him D. he didn’t know why the police wanted him 32. The police who talked to Ted was_________. A. pleasant B. worried C. surprised D. small 33. Why was Ted very surprised when he heard the news? A. Because his bicycle was stolen 20 years ago. B. Because his bicycle was found when he was a boy of fifteen. C. Because he thought he would never find the bicycle. D. Because the bicycle was sent to him by train. 34. When was Ted’s bicycle found? A. Last Tuesday B. Five years ago C. Twenty years ago D. Yesterday 35. Which of the following statements is NOT true? A. The police asked Ted to go to their station. B. The policeman told Ted the good news 5 days ago. C. Ted is no longer anxious now. D. Ted is 35 years old now.

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