关系到信息系统能否最大程度发挥作用的关键问题是确定新系统地（）。A.外部环境 B.管

Why is (71) fun What delights may its practitioner expect as his reward First is the Sheer joy of making things．As the child delights in his mud pie，So the adult enjoys building things，especially things of hid own design．Second is the pleasure of making things that are useful to other people．Third is the fascination of fashioning complex puzzle-like Objects of interlocking moving parts and Watching them work in subtle cycles，playing out the consequences of principles built in from the beginning．Fourth is the joy of always learning， Which Springs from the (72) nature of the task．In one Way or another the problem id ever new, and its solver learns something：sometimes (73) ，sometimes theoretical，and sometimes both．Finally there is the delight of Working in such a tractable medium．The (74) ，like the poet，works only slightly removed from pure thought-stuff. Few media of creation are so flexible，so easy to polish and rework，so readily capable of realizing grand conceptual Structures． Yet the program (75) ，unlike the poet's words，is real in the sense that it moves and works，producing visible outputs separate from the construct itself．It prints results，draws pictures，produces sounds，moves arms．Programming then is fun because it gratifies creative longings built deep Within us and delights sensibilities we have in common With all men．

（75）处填（）。

A．construct

B．code

C．size

D．scale

小明制定了一个孝敬父母长辈的小计划，下列内容你应该学习的是[ ]

①给正在忙碌的爸爸端茶送饭

②妈妈工作回家，端上一杯清茶，说声“辛苦了”

③到王大伯家的鱼塘中钓条鱼回来让奶奶尝尝鲜

④天天在家陪爷爷聊天，逗他开心，不上学

A．①②    

B．②③    

C．③④    

D．①④

物业管理绩效评价的主要方法是( )。

A．综合分析判断法

B．功效系数法

C．定性分析判断法

D．基本指标计分方法

Students who say they never or hardly ever used dictionaries often speak English well but usually write poorly, because they make many mistakes.

The students who use dictionaries most do not learn especially well either. The ones who look up every new word do not read fast. Therefore they do not have time to read much. Those who use small two-language dictionaries have the worst problems. Their dictionaries often give only one or two words as translations of English. But one English word often has many translations in a foreign language and one foreign word has many translations in English.

The most successful students are those who use large college edition dictionaries with about 100,000 words but do not use them too often. When they are reading, these students first try to get the general idea and understand new words from the context. Then they reread and use the dictionary to look up only key words that they still do not understand. They use dictionaries more for writing. If they are not sure how to spell a word, or divide it into syllables (音节), they always use a dictionary. Also, if they think a noun might have an unusual plural form, they check these in a dictionary.

小题1: The writer thinks that        .

A．choose a good dictionary, and you’ll be successful in learning English

B．dictionaries are not necessary to the students who learn English

C．it is very important for students to use good dictionaries properly

D．using dictionaries very often can’t help to improve writing小题2:According to the passage, which of the following is wrong?

A．Dictionaries have little effect on learning to speak English.

B．Whatever new words you meet while reading, never use dictionaries.

C．Small two-language dictionaries have serious defects (缺陷).

D．Reading something for the first time, you’d better not use dictionaries.小题3:When in the reading does the writer advise students to use a good dictionary?

A．At the beginning of the reading

B．At the end of the reading

C．During the first reading

D．After the first reading小题4:This passage mainly tells us        .

A．students shouldn’t use small two-language dictionaries

B．what were the defects of small two-language dictionaries

C．why students should use large college edition dictionaries

D．what dictionary students should choose and how to use it小题5: Which is not mentioned in this passage?

A．How to make good use of a dictionary.

B．When to use a dictionary.

C．How to improve spoken English.

D．How to practise reading fast.

CHAP采用（）周期性的验证源节点的身份。

A.两次握手

B.三次握手

C.碰撞检测

D.窗口检测