题目

先化简，再求值 －a2b＋(3ab2－a2b)－2(2ab2－a2b)，其中a＝1，b＝－2． 答案：原式==缺词填空根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整，每空一词。Eleven-year-old Antonin Careme could not believe that his father had ordered a lot of delicious food. It was an unexpected (意料不到的)dinner b 1. the Careme family was poor. As he was eating thankfully, his father e 2. to him in a sad voice that this would be a farewell meal. His father could no l 3. support all his children, so Antonin would have to leave home to make money h 4. .After the meal, Antonin walked a 5. the streets, wondering who would take him in. He knocked on the door of a restaurant where the o 6. happened to need an assistant. In the restaurant, young Antonin g 7. his first lesson in cooking.He was hard-working and his employer (雇主)decided to t 8. him all the skills and secrets of French cooking. When he was fifteen years old, Antonin trained under the famous cook, Baily.One of Baily's customers was s 9. impressed with Antonin's style of cooking that he asked him to be his p 10. cook, working at his home. Antonin later went on to work for a diplomat, a banker and even the king.