下列中不属于直接金融机构的是（）。 A.投资银行 B.证券公司 C.投资基金公司 D

已知数列{a_n}的前n项和为S_n，且S_n=n²．数列{b_n}为等比数列，且b₁=1，b₄=8．

（Ⅰ）求数列{a_n}，{b_n}的通项公式；

（Ⅱ）若数列{c_n}满足c_n=a_bn，求数列{c_n}的前n项和T_n，并证明T_n≥1．

阅读理解。

     When I learned that my 71-year-old mother was playing Scrabble-a word game-against herself, I

knew I had to do something. My husband suggested we give her a computer to play against. I wasn't

sure my mother was ready for it After all, it had taken 15 years to persuade her to buy an electric cooker.

Even so, we packed up our old computer and delivered it to my parents' home. And so began my mother's

adventure in the world of computers.

     It also marked the beginning of an unusual teaching task for me. I've taught people of all ages, but I

never thought I would be teaching my mother how to do anything. She has been the one teaching me all

my life: to cook and sew: to enjoy the good times and put up with the bad. Now it was my turn to give

something back.

     It wasn't easy at the beginning. There was so much to explain and to introduce. Slowly but surely, my

mother caught on, making notes in a little notebook. After a few months of Scrabble and other games, I

decided it was time to introduce her to word processing (文字处理) This proved to be a bigger challenge

(挑战) to her, so I gave her some homework I asked her to write me a letter, using different letter types,

colors and spaces.

     "Are you this demanding with your kindergarten pupils?" she asked. 

     "No, of course not," I said. "They already know how to use a computer."

    My mother isn't the only one experiencing a fast personal growth period. Thanks to the computer, my

father has finally got over his phone allergy (过敏反应). For as long as I can remember, any time I called,

my mother would answer. Dad and I have had more phone conversations in the last two months than we've

had in the past 20 years.

1. What does the author do?

A. She is a cook.

B. She is a teacher.

C. She is a housewife.

D. She is a computer engineer.

2. The author decided to give her mother a computer _____.

A. to let her have more chances to write letters

B. to support her in doing her homework

C. to help her through the bad times

D. to make her life more enjoyable

3. The author asked her mother to write her a letter _____.

A. because her mother had stopped using the telephone

B. because she wanted to keep in touch with her mother

C. so that her mother could practice what she had learned

D. so that her mother could be free from housework

4. After the computer was brought home, the author's father _____.

A. lost interest in cooking

B. took more phone calls

C. played more games

D. began to use it

组织为达到目的而制定的活动方针和一般规定的计划叫做（）

A.宗旨

B.策略

C.目标

D.政策

E.目的

2008年，某航空公司准备在其商用零售部门安装公司有史以来最大的计算机系统。这个新计算机系统的安装，将对其零部件部门的700名雇员产生直接的影响，而且这种影响不仅仅是在使用这个新计算机系统的技术方面，例如该部门的办公室会成为无纸办公室状态等，而且更多的雇员将会在计算机终端上工作，因而需要对雇员进行广泛的再培训。由于该部门人员的职能多种多样，再培训面临着种种挑战：一半人在货栈工作，负责部件的装配、收货和仓储；另一半人则在30英里开外的另一办公室里工作；而且这些人受教育程度参差不齐。在确定培训计划的性质时，该公司面临一些问题：由于公司已有一个完整的内部培训部，因此决定让内部培训部来实施培训，但是要在很短时间内对700名雇员进行培训是很困难的，因此需要一个培训服务和方式均合适的咨询公司来帮忙。于是，该航空公司考虑请一个总部设在旧金山的x咨询公司来做。x公司在迅速设计大规模培训计划方面享有盛誉，其培训开发方式主要有利用书面资料和录像资料组织研修、参与式练习、范例以及讲座实施研修。
根据上述材料，回答下列问题。

从培训对象来看，你认为是该公司的培训属于( )培训。

A．决策管理层

B．专业技术人员与操作人员层

C．督导管理层

D．临时服务人员

水中溶解氧的含量和（）因素有密切关系。

A、空气中氧的分压

B、大气压力

C、水温

D、水中含盐量