19．Read the passage and fill in the blanks with proper words：（在短文的空格内填入单词7%）
Water is around us．Water is in the ocean，in the lake and river and in the air．There is more water than land on the earth．All things must have water to live．The plants must have it．The animals must have it．We must have it，too．We cannot live without drinking water．Sometimes we do not have all the water that we need．The land will dry up without water．Sometimes，there can be too much water in the land．If it rains very，very hard，the rain water will run down the hills．It takes some of the land with it when it runs down the hills．It is called erosion腐蚀when the water takes the land away．
Water on the earth will never be used up．It goes from the ocean to the air to make clouds．Then，it falls from the clouds down to the land．It runs off the land and out to the ocean again．The clouds in the air are mmade of water．Sometimes the water falls down from the ground．Some of it washes down and goes back into the ocean．Some water that is not rain or snow falls down from the clouds．Some of this water is sleet雨夹雪．The sleet is made of little pieces of ice．Some water that is not rain or snow or sleet falls from the clouds．Some of this water is hail冰雹．The hail is made of ice balls．
63．ocean
64．drinking
65．need
66．never
67．mmade
68．goes
69．Some．
分析 本文是一篇说明文．介绍了水对我们生存的重要性，以及水的形成和各种形态．
解答 63．ocean 由"in the lake and river and in the air"可知此题应该填水所在的地方，用ocean表示"海洋"，与lake，river和air是同类词．64．drinking 此句所在的we指的是人类，所以用drinking water表示"饮用水"．65．need"that we n______"这个句子是定语从句，先行词是water，根据首字母提示可填入need表示"需要"，need water表示"需要水"，主语we是复数，所以need用原形即可．66．never 此段主要介绍的是水的形成和形态，说明了它是循环产生的，所以用never be used up表示"永远不会被用完"．67．made 此题考查固定搭配． be made of表示由…做成．此句的意思是"空中的云是由水形成的"．68．goes 此题考查固定搭配go back表示"回去"，由washes可知要用go的第三人称单数形式．69．Some 考查固定搭配some of…表示"…中的一些"．
点评 此类题主要考查学生对文章意思的掌握，以及结合上下文和首字母提示填写正确单词的能力，需要注意词语数和人称以及时态的变化．
