第一代计算机采用的电子器件是( )。A．晶体管 B．电子管 C．中小规模集成电路

阅读理解。

     In this age of Internet chat, videogames and reality television, there is no shortage of mindless activities

to keep a child occupied. Yet, despite the competition, my 8-year-old daughter Rebecca wants to spend her

leisure time writing short stories. She wants to enter one of her stories into a writing contest, a competition

she won last year. 

     As a writer I know about winning contests, and about losing them. I know what it is like to work hard

on a story only to receive a rejection slip from the publisher. I also know the pressure of trying to live up to

a reputation created by previous victories. What if she doesn't win the contest again? That's the strange thing

about being a parent. So many of our own past scars and dashed hopes can surface.

     A revelation (启示) came last week when I asked her, "Don't you want to win again?" "No," she replied,

"I just want to tell the story of an angel going to first grade."

     I had just spent weeks correcting her stories as she spontaneously (自发地) told them. Telling myself that

I was merely an experienced writer guiding the young writer across the hall, I offered suggestions for

characters, conflicts and endings for her tales. The story about a fearful angel starting first grade was quickly

"guided" by me into the tale of a little girl with a wild imagination taking her first music lesson. I had turned her

contest into my contest without even realizing it.

     Staying back and giving kids space to grow is not as easy as it looks. Because I know very little about farm

animals who use tools or angels who go to first grade, I had to accept the fact that I was co-opting (借用) my

daughter's experience.

     While stepping back was difficult for me, it was certainly a good first step that I will quickly follow with

more steps, putting myself far enough a way to give her room but close enough to help if asked. All the while

I will be reminding myself that children need room to experiment, grow and find their own voices.

1. What do we learn from the first paragraph? [ ]

A. A lot of entertainments compete for children's time nowadays.

B. Rebecca is much too occupied to enjoy her leisure time.

C. Children do find lots of fun in many mindless activities.

D. Rebecca draws on a lot of online materials for her writing.

2. What did the author say about her own writing experience? [ ]

A. She did not quite live up to her reputation as a writer.

B. Her way to success was full of pains and frustrations.

C. She was constantly under pressure of writing more.

D. Most of her stories had been rejected by publishers.

3. The author took great pains to correct her daughter's stories because _____.[ ]

A. she wanted to help Rebecca realize her dreams of becoming a writer

B. she was afraid Rebecca's imagination might run wild while writing

C. she did not want to disappoint Rebecca who needed her help so much

D. she believed she had the knowledge and experience to offer guidance

4. What's the author's advice for parents? [ ]

A. Children should be given every chance to voice their opinions.

B. Parents should keep an eye on the activities their kids engage in.

C. Children should be allowed freedom to grow through experience.

D. A writing career, though attractive, is not for every child to pursue.

关于脑蛛网膜下隙的描述正确的是（）

A．经延髓中央管通脊髓蛛网膜下隙

B．与脊髓蛛网膜下隙不连通

C．位于蛛网膜与硬脑膜之间

D．蛛网膜颗粒引流脑脊液直接汇入静脉

E．形成蛛网膜下池

胶体溶液不一定都有丁达尔现象。

（）是世界最主要珠宝首饰加工中心、世界第三黄金贸易中心.

A.德国

B.香港

C.日本

D.英国

中和水中CO₂含量高，主要表现在制碱塔上部、中部温度比正常控制的温度（）。

A、低

B、高

C、先低后高

D、先高后低