成人患牙三氧化二砷封药时间为A.30~40分钟B.24~48小时C.3天D.半个月E

题型:单项选择题

问题:

成人患牙三氧化二砷封药时间为

A.30~40分钟
B.24~48小时
C.3天
D.半个月
E.1个月

考点:口腔五官科主治医师口腔修复相关专业知识中级口腔主治医师口腔修复学相关专业知识
题型:单项选择题

及时准确地书写临床护理记录,体现的是护理技术美的哪个原则?()

A.严谨

B.细致

C.敏捷

D.轻柔

题型:单项选择题

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 8yearold 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

coopting(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 away 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 not 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.

题型:单项选择题

胆囊癌的预后与分期有关,根据Nevin分期,侵犯胆囊壁全层属于()。

A.Ⅰ期

B.Ⅱ期

C.Ⅲ期

D.Ⅳ期

E.Ⅴ期

题型:单项选择题

岩心长

题型:单项选择题

trp操纵子的转录作用能够通过加入Trp类似物吲哚丙酸(IPA)而开始。

当洗涤除去IPA并以Trp代替时,这些酶的合成按同样的顺序终止,为什么

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