19．Read the passage and fill in the blanks with proper words：（在短文的空格內(nèi)填入單詞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腐蝕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雨夾雪．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 本文是一篇說明文．介紹了水對我們生存的重要性，以及水的形成和各種形態(tài)．
解答 63．ocean 由"in the lake and river and in the air"可知此題應(yīng)該填水所在的地方，用ocean表示"海洋"，與lake，river和air是同類詞．64．drinking 此句所在的we指的是人類，所以用drinking water表示"飲用水"．65．need"that we n______"這個句子是定語從句，先行詞是water，根據(jù)首字母提示可填入need表示"需要"，need water表示"需要水"，主語we是復(fù)數(shù)，所以need用原形即可．66．never 此段主要介紹的是水的形成和形態(tài)，說明了它是循環(huán)產(chǎn)生的，所以用never be used up表示"永遠不會被用完"．67．made 此題考查固定搭配． 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 此題考查固定搭配go back表示"回去"，由washes可知要用go的第三人稱單數(shù)形式．69．Some 考查固定搭配some of…表示"…中的一些"．
點評 此類題主要考查學(xué)生對文章意思的掌握，以及結(jié)合上下文和首字母提示填寫正確單詞的能力，需要注意詞語數(shù)和人稱以及時態(tài)的變化．
