Sarah always makes her son ________ his hands before eating.

课外阅读，回答问题。 美丽的巩乃斯
     巩乃斯是个青山常绿、花海袭人的好地方，那起伏的山岭就像一条条蛟龙奔腾于沟中，那一坡坡的鲜花就像一条条美丽的彩带。蛟龙腾舞，花海飞驰。像神奇之门不断闪开。莺儿在林中嬉戏歌唱，蜂蝶在花丛惹闹沾欢，牛羊在高地漫游，雪豹、棕熊吼声使人心惊，云杉立于悬崖，山花搂抱于奇木，新泉老林奇巧组合，小溪大气同放清新。
     巩乃斯微风吹拂，林涛震耳，桦榆妩媚，云杉多姿，曲柳婀娜。蜂蝶过处，草青叶雅，金英子耀金，党参花溅香，乌拉贵花吐芳，山丹丹花流艳。温泉腾紫雾，热气拂人面，白云身边绕，天使眼前飞。巩乃斯河碧水流欢，瀑布飘逸，千山万壑，气势万千。
     巩乃斯沟是云雾蒸腾、雨雪际会的好去处。山上的云、岭下的雾，丝丝缕缕，纤纤飘来，曲曲卷卷，缓缓飞舞，有时如惊涛骇浪，巨浪排空;有时如千军万马呼啸而来，不时又静静动动飘忽不定，给人一种神仙的境界。一时又雨跃荡水，雪絮飘舞，雨滚雪翻，雨虽不大，却是细雨;雪虽不狂，是轻雪，但给了你一个调皮的孩儿脸。一会儿又云开日出，山沟又成了另一番诗情画意，满沟清新，满坡的胜景，满沟的仙境，这就是闻名于世的巩乃斯沟。

中国古代最早的水钟是受水型水钟。

       My friend Tony is an American   1  . He is ten years old. He lives  2  his family in China now. There are   3   people in his family; his mother Mrs. Green, his father Mr. Green and his little sister Amy. He has a white cat.  4  name is Betty. Look！Amy is playing   5  Betty. His father, Mr. Green, is watc­hing TV. His mother is doing housework. What about Tony? He is doing   6 Chinese homework. He can't  7 Chinese well, but he likes Chinese very much. Tony's 8 works in a TV station. His father works in a school as an   9  teacher. Tony and his sister 10  to the same school.

近代以来，为了救亡图存，强国富民，无数仁人志士，进行了可歌可泣、不屈不挠的探索和奋斗，但是，他们都以失败而告终，这从反面进一步说明（  ）
①没有共产党就没有新中国
②只有社会主义才能救中国
③没有正确理论指导就难以取得革命的胜利
④只要有了***的领导，就能解决中国所有的问题。