试述影响关节灵活性和稳固性的因素有哪些?

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问题:

试述影响关节灵活性和稳固性的因素有哪些?

考点:人体解剖学运动解剖学运动解剖学题库
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下列反应进行分类时(按初中的方法),既属于氧化反应又属于化合反应的是(  )

A.Zn+H2SO4=ZnSO4+H2↑   

B.2KClO32KCl+3O2

C.S+O2SO2        

D.H2+Cl22HCl

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下列有关高能电子束剂量分布特点的描述哪项不正确()

A.从表面到一定深度,剂量分布均匀 

B.能量高表面剂量低,能量低表面剂量高 

C.在一定深度之后,剂量下降快 

D.随能量增加,下降梯度变小 

E.剂量建成区比较窄并随能量增加而变化

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阅读理解。

     Reading poems is not exactly an everyday activity for most people. In fact, many people never read

a poem once they get out of high school.

     It is worth reminding ourselves that this has not always been the case in America. In the nineteenth

century, a usual American activity was to sit around the fireside in the evening and read poems aloud.

It is true that there was no television at the time, nor movie theaters, nor World Wide Web, to provide

diversion. However, poems were a source of pleasure, of self-education, of connection to other people

or to the world beyond one's own community. Reading them was a social act as well as an individual

one, and perhaps even more social than individual. Writing poems to share with friends and relations

was, like reading poems by the fireside, another way in which poetry has a place in everyday life.

     How did things change? Why are most Americans no longer comfortable with poetry, and why do

most people today think that a poem has nothing to tell them and that they can do well without poems?

     There are, I believe, three factors: poets, teachers, and we ourselves. Of these, the least important is

the third: the world surrounding the poem has betrayed us more than we have betrayed the poem. Early

in the twentieth century, poetry in English headed into directions unfavorable to the reading of poetry.

Readers decided that poems were not for the fireside or the easy chair. at night, and that they belonged

where other difficult-to-read things belonged.

     Poets failed the reader, so did teachers. They want their students to know something about the skills

of a poem, they want their students to see that poems mean something. Yet what usually occurs when

teachers push these concerns on their high school students is that young people decide poems are

unpleasant crossword puzzles.

1. Reading poems is thought to be a social act in the nineteenth century because _____.

A. it built a link among people

B. it helped unite a community

C. it was a source of self-education

D. it was a source of pleasure

2. The underlined word "diversion" most probably means _____.

A. concentration

B. change

C. amusements

D. stories

3. According to the passage, what is the main cause of the great gap between readers and poetry?

A. Students are becoming less interested in poetry.

B. Students are poorly educated in high school.

C. TV and the Internet are more attractive than poetry.

D. Poems have become difficult to understand.

4. In the last paragraph, the writer question _____.

A. the difficulty in studying poems

B. the way poems are taught in school

C. students' wrong ideas about poetry

D. the techniques used in writing poem

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大面积烧伤,体液从血管渗出,达到高峰于伤后()

A.24~36小时

B.36~48小时

C.12~24小时

D.6~8小时

E.8~12小时

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