题目内容
18．We can never expect____bluer sky unless we create____less polluted world．（ ）| A． | a； a | B． | a； the | C． | the； a | D． | the； the |
分析 如果我们不创造一个没有什么污染的世界，我们永远不能期待更蓝的天空．
解答 答案：A．sky和world原本是独一无二的，但这里前面都有了形容词修饰，表示会出现一个什么样的sky和world，属于泛反指，故用不定冠词a．
点评 本题考查冠词，先明确定冠词和不定冠词的用法区别，再结合句意和一些特殊用法选择适当答案．
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14．Directions：Read the following text and choose the most suitable heading from A-F for each paragraph．There is on e extra heading which you do not need．
80．F
You're probably most familiar with college dictionaries，often called abridged dictionaries．Although abridged means"shortened"，these dictionaries contain more than 150.000entries and provide detailed definitions that are sufficient for most college students and general users．College dictionaries also contain separate lists of abbreviations．Biographical and geographical names，foreign words and phrases．And tables of measures．Webster'sⅡNew Riverside University Dictionary and the American Heritage Dictionary of the English Language are college dictionaries．
81．Dunabridged dictionaries contain as many as 500，000entries and provide detailed definitions and extensive word histories （etymologies）．These dictionaries，possibly in several volumes and mostly found in libraries，are excellent sources for scholarly inquiries．Unabridged dictionaries include the Oxford English Dictionary and the Random House Dictionary of the English Language．
82．C
A dictionary entry has many elements：multiple definitions，syllabication，preferred spelling and pronunciation （some word have more than one acceptable spelling and pronunciation），and part-of-speech labels．Some entries also include plurals and capitalized forms．Synonyms，antonyms，and derivatives．Americanisms and etymologies may be provide along with usage notes，cross-references，and idioms．
83．B
If you prefer using the dictionary on a computer，you can obtain CD-ROM versions of many major dictionaries．In addition，you can access numerous dictionaries，such as WWWebster's Dictionary，on the Internet．Online dictionaries allow you to enter a search word （you even get help with spelling ） to see a definition，and sometimes even an illustration．Online dictionaries also offer additional features，such as word games．Language tips，and amusing facts about words．Some online dictionary services allow you to access numerous dictionaries，both general and specialized，in on search．
84．E
Specialized dictionaries provide in-depth information about a certain field．For example there are dictionaries for the specialized vocabularies of law，computer technology，and medicine．In addition，there are dictionaries of synonyms，clichés，slang，and even regional expressions．Such as the Dictionary of American Regional English（DARE）．There are also dictionaries of foreign languages，famous people's names，literary characters'names and place names．
| A．Varieties of college dictionaries B．Accessing dictionaries electronically C．Elements under a word item D．Complete editions of dictionaries E．Using dictionaries for particular fields F．Features of college dictionaries |
You're probably most familiar with college dictionaries，often called abridged dictionaries．Although abridged means"shortened"，these dictionaries contain more than 150.000entries and provide detailed definitions that are sufficient for most college students and general users．College dictionaries also contain separate lists of abbreviations．Biographical and geographical names，foreign words and phrases．And tables of measures．Webster'sⅡNew Riverside University Dictionary and the American Heritage Dictionary of the English Language are college dictionaries．
81．Dunabridged dictionaries contain as many as 500，000entries and provide detailed definitions and extensive word histories （etymologies）．These dictionaries，possibly in several volumes and mostly found in libraries，are excellent sources for scholarly inquiries．Unabridged dictionaries include the Oxford English Dictionary and the Random House Dictionary of the English Language．
82．C
A dictionary entry has many elements：multiple definitions，syllabication，preferred spelling and pronunciation （some word have more than one acceptable spelling and pronunciation），and part-of-speech labels．Some entries also include plurals and capitalized forms．Synonyms，antonyms，and derivatives．Americanisms and etymologies may be provide along with usage notes，cross-references，and idioms．
83．B
If you prefer using the dictionary on a computer，you can obtain CD-ROM versions of many major dictionaries．In addition，you can access numerous dictionaries，such as WWWebster's Dictionary，on the Internet．Online dictionaries allow you to enter a search word （you even get help with spelling ） to see a definition，and sometimes even an illustration．Online dictionaries also offer additional features，such as word games．Language tips，and amusing facts about words．Some online dictionary services allow you to access numerous dictionaries，both general and specialized，in on search．
84．E
Specialized dictionaries provide in-depth information about a certain field．For example there are dictionaries for the specialized vocabularies of law，computer technology，and medicine．In addition，there are dictionaries of synonyms，clichés，slang，and even regional expressions．Such as the Dictionary of American Regional English（DARE）．There are also dictionaries of foreign languages，famous people's names，literary characters'names and place names．
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