题目内容
17．Many people keep small fish（61）aspets．They keep them in a tank of water．The tank is （62）madeof glass．People can look through it．They can see inside the tank and watch the fish．The fish need room．They mustn't be（63）crowded（crowd）．They need oxygen to（64）breathe（breath）．There must be enough water for all fish．So the size of the tank is very important．
In the tank people put small plants（65）that/whichare good for fish．They give oxygen to the water．Plants help in other ways，too．The fish can hide among the plants，sleep there and lay eggs there．
The fish must be（66）kept（keep） in water all the time．Some can jump（67）high（high）．So the tank should be covered．This keeps the fish from（68jumpingjump） out．
The fish need food and should be fed every day．But （69）if/whenyou give them too much food，it is very bad，for the extra food will fall to the bottom and make the water dirty．So the fish should get just enough food and finish eating （70）itin ten minutes．Nothing should be left．
分析 本文主要讲述养小鱼作为宠物的注意事项．比如：水箱要用玻璃制作，水箱里要放足够的水，还要放些小植物，每天投放食物时不要太多等．
解答 61，as 62，made 63，crowded 64，breathe 65，that/which
66，kept 67，high 68，jumping 69，if/when 70，it
61，as 考查介词．as意为"作为"，即：许多人把养小鱼作为宠物．
62，made 考查固定搭配．be made of意为"由…制成"，表示制成成品后，仍可看出原材料是什么，保留原材料的质和形状，制作过程仅发生物理变化．
63，crowded 考查形容词．be动词后用形容词作表语，crowd的形容词是crowded，意为"拥挤的"．
64，breathe 考查动词不定式．need是实义动词，后可接动词不定式．
65，that/which 考查定语从句．分析句子结构可知这是一个定语从句，先行词 plants指物，在从句中作主语，要用关系代词that/which．
66，kept 考查动词语态．fish与keep之间是动宾关系，要用被动语态．
67，high 考查副词．jump是动词，要用副词修饰，high既可作形容词，也可作副词．
68，jumping 考查动名词．from是介词，后接动词时要用动名词形式．
69，if/when 考查连词．即：如果你给太多的食物，这是有害的，因为多余的食物会沉到底部使水变脏．
70，it 考查代词．it指代food．
点评 在一篇200词左右的语篇（短文或对话）中留出10处空白，部分空白的后面给出单词的基本形式，要求考生根据上下文填写空白处所需的内容或所提供单词的正确形式，所填写词语不得多于3个单词．要做好语法填空题，理解短文是解题的前提，扎实的词汇、句型和语法知识是基础，英语国家的背景知识是必要的补充．考生须灵活运用语法知识，如单词词性、单词时态、名词单复数、连接词、代词、冠词等判断各空白处应填写的内容．答完后，还要通读全文，核对所填单词形式是否正确，是否符合语境．
