题目内容
17．你很想换一部智能手机（smart phone），但你的父母不同意，请你向他们说明理由．分析 本篇作文要求考生向家长说明换智能手机的理由，即考生需要写智能手机的好处．注意分点列举．写作时为了语言的连贯应该恰当使用连接词和插入语以及注意高级词汇和句式的使用．
重要短语：
In the first place，首先，In addition而且，be addicited in，沉溺于
高分句子：
I really need a Mobile phone for it is necessary and important in modern society as it brings a lot of convenient to lives and provides a new way for me to contact with you and my friends．本句为长复合句，包含as引导的原因状语从句．
解答 I really need a Mobile phone for it is necessary and important in modern society as it brings a lot of convenient to lives and provides a new way for me to contact with you and my friends．（高分句型）
In the first place，mobile phone makes my study more efficient．I can use mobile phones to search data，to delivery files and so on．For our students，we can use mobile phone to do some readings at any time and any places without carrying a book．
In addition，mobile phone makes our lives be more wonderful in that，it has been added more and more functions，such as watching movies，listening to music and writing blog，etc．（条理清晰说明原因）
In a word，mobile phone provides great convenient for our lives，and can make my live more wonderful and brings me an easier way to contact with the world．And I promise if I have it，I would not be addicited to it．So，can I have one？（提出要求）
点评 在写作中，除了保证单词的正确性和高级性，重要的就是要尽量运用多样化的句式，注意长短句的结合、简单句和复合句的结合，使文章看起来有水平不单调．
| 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．
