问题
填空题
多层楼板模板支架的拆除应按下列要求进行：上层楼板正在浇筑混凝土时，下一层楼板的模板支架不得除，再下一层楼板模板的支架仅可拆除一部分；跨度（）的梁下均应保留支架，其间距（）。
答案
参考答案：≥4m，<3m
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多层楼板模板支架的拆除应按下列要求进行：上层楼板正在浇筑混凝土时，下一层楼板的模板支架不得除，再下一层楼板模板的支架仅可拆除一部分；跨度（）的梁下均应保留支架，其间距（）。
参考答案：≥4m，<3m
完形填空 You may not know how his magic tricks work . But that’s why they are so much fun ! American magician(魔术师) David Copperfield is coming back to China. He’s going to show everyone, young and old, ___1______ cool, new magic tricks. Copperfield is one of the world’s most famous ___2______. Copperfield’s shows begin in Beijing on April 20. He will also give shows in Changsha , Hangzhou , Nanjing and Shanghai __3________ April and May . There will be 38___4______ in all . Copperfield began studying magic when he was a child . At the ___5______ of 12 , he was the youngest person to be in the Society of American Magicians (全美魔术家协会). And now , he is famous all over the world . In 1983, he made the Statue of Liberty in New York go away ___6______ a few minutes . In 1986, he walked through the Great Wall in Beijing! His shows are not just magic. He also dances ____7_____does lots of interesting things to make his fans happy . He even asks his fans to help ____8_____ do trick! One of Copperfield’s body greatest tricks is flying . At his shows in China, he is going to make some fans fly around! How does he make people fly? No one knows .That’s his secret. In ___9______ trick, an electric saw(电锯) will cut Copperfield’s body in halt._____10_______ after the trick, he’s OK. Copperfield will also teach magic tricks to some disable(残疾) children in Chinese hospitals.
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