①百家争鸣②新文化运动③人民公社化运动④真理标准问题讨论

阅读下列材料

材料一：1955年9月17日，经过五年多的斗争，饱受折磨的钱学森离开美国，回到了祖国。回国后不久，组织上安排钱学森去东北参观。在参观到一个小火箭试验台前时，陈庚问他；“我们能不能造出火箭、导弹来？”钱学森不假思索地回答道：“有什么不能的，外国人能造，中国同样能造！”

材料二：钱学森离开美国后再也没有回去过。钱学森对美国朋友和科学同行十分友好，并保持着联系，但他坚持只要美国政府不对当年驱逐他出境正式道歉，他今生今世绝不再去美国。

材料三：我们的国家日益兴旺发达，“神舟”系列飞船的发射成功，使我们每一个中国人都感受到前所未有的自信。

有法可依、____、____、违法必究，是依法治国的基本要求。

    Mr. Lin has a store. It's next to No. 5 Middle School. It sells maps, books, pens, pencils, clothes and some other things. The things in his store are not expensive. Boys and girls like to go to his store. They like Mr. Lin because he is very nice. Mr. Lin likes the boys and girls, too. Mr. Lin has a “lost and found” box in his store. Look! A baseball, a ruler and some books are in the box. This box helps some boys and girls find their lost things. A sofa is in Mr. Lin's store, too. Boys and girls can sit there and read books after school. They can ask Mr. Lin questions about these books and he often helps them to find the answers.