技能的基本特点是（）。 技能是通过遗传获得的。 技能是通过学习或练习而形成的，不同于本能行为。 技能是由一系列动作及执行方式构成的。 技能是通过系统的学习与教学而形成的。 技能中的各动作要素及其执行顺序要体现活动本身的客观法则的要求，不是一般的习惯动作。
在腌渍保藏中，要使腌制速率加快，可选用下列方法选择合适腌制剂、（）、提高温度、提高溶质浓度和降低被腌制物的厚度。醇类和烃类是与风味无关的物质。在烟熏成分烃类中，（）、二苯并蒽是致癌物质。
最早的学习迁移理论是（）。 共同要素说。 概括原理说。 关系转换说。 形式训练说。
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!
___9___内应选（） bike。 midnight。 fortunately。 look。 problem。 faced。 sure。 on。 feared。 tiny。 completely。 lick。
民窑纪年款
研究社会资本再生产的核心问题是（）
