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具有芳香第一胺反应的药物是（ ）。
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用来鉴定DNA的技术是（）
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下列哪项不是树脂赋予漆膜的性能（）。
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对统计总体中的全部单位进行调查称为普查。（ ）
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普米克令舒雾化治疗下列哪种疾病的急性发作，并且能减少今后支气管哮喘的发生（）。
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As Christmas is coming, there are presents to be bought, cards to be sent, and rooms to be cleaned. Parents are ___1___ with difficult jobs of hiding presents from curious young children. If the gifts are large, this is sometimes a real ___2___. On Christmas Eve, young children find the excitement almost unbearable. They are torn between the wish to go to bed early so that Father Christmas will bring their presents quickly and the wish to stay up late so that they will not miss the fun. The wish for gifts usually proves stronger. But though children go to bed early, they often lie awake for a long time, hoping to get a short ___3___ at Father Christmas. Last Christmas, my wife and I successfully hid a few large presents in the storeroom. I ___4___ the moment when my son, Jimmy, would ask me where that new bike had come from, but ___5___ he did not see it. On Christmas Eve, it took the children hours to go to sleep. It must have been nearly ___6___ when my wife and I went quietly into their room and began filling stockings. Then I pushed in the ___7___ I bought for Jimmy and left it beside the Christmas tree. We knew we would not get much sleep that night, for the children were ___8___ to get up early. At about five o’clock the next morning, we were woken by loud sounds coming from the children’s room — they were shouting excitedly! Before I had time to get out of bed, young Jimmy came riding into the room on his new bike, and his sister, Mary, followed close behind pushing her new baby carriage. Even the baby arrived. He moved ___9___ the hands and knees into the room dragging a large balloon behind him. Suddenly it burst. That woke us up ___10___. The day had really begun with a band! ___3___内应选（）
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把实用的东西根据使用频度分别放置的做法是（ ）。
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文化讨论中的不协调音调有（）
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顿挫型脊髓灰质炎的病程中止于（）
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明显的表面构造是指在卷材的一面或两面，影响卷材的厚度超过（）%的一种构造形式或凸起。