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某种商品原价200元，提价10%后又降价10%，现在的价格是( )
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I Don’t Want to Go to School (我不想去学校)Harry came to his mother one morning while she was having her breakfast, and said to her, "No one at my school likes me, Mother. The teachers don’t, and the children don’t. Even the cleaners and the bus drivers hate me. ""Well, Harry," his mother answered, "Perhaps you aren’t very nice to them. If a few people don’t like a person, he or she may not be responsible (负责任的) for that; but if a lot of people don’t, there’s usually something wrong, and that person really needs to change.""I’m too old to change," Harry said. "I don’t want to go to school.""Don’t be silly (傻的；糊涂的), Harry," his mother said, going towards the garage (车库) to get the car out. "You have to go. You’re quite well, and you still have a lot of things to learn. And besides that, you’re the headmaster (校长) of the school. \ His mother also had to work（）
SQL中用于对查询结果进行分组的语句是______。
我们不能不为他这种不向困难低头的精神所感动。应该不应该低头，本长句的意思是( )
A是一名计算机编程专家，B是一位数学家。其实所有的编程专家都是数学家，我们知道，今天国内的大多数综合性大学都在培养着计算机编程专家，据此我们可以认为( )
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