题目

Read the passage and fill in the blanks with proper words.(在短文的空格内填入适当的词，使其内容通顺，每空格限填一词，首字母已给)       There is a lot of water on the e ,but we cannot use mof it. About 97.4% of the earth's water is s, We can't drink it. Most of the fresh water is snow and ice near the North and South poles.     We can use only about one percent of the water on the earth. We use water from both lakes and r. Some of the water evaporates (蒸发)and then becomes r. Of course we use rain water for farms and other things. We use this water aand again. That's what we call wcycle(循环). 答案：【1】earth【2】most【3】salty【4】rivers【5】rain【6】again【7】water

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