在不违背技术基础的条件下,运动员表现出来的个人技术特点称之为()。 A.运动技术 B

题型:单项选择题

问题:

在不违背技术基础的条件下,运动员表现出来的个人技术特点称之为()。

A.运动技术

B.技术基础

C.技术细节

D.技术要点

考点:中学体育与健康(初级)体育人文社会学体育人文社会学题库
题型:单项选择题

1922年,生物学家坎贝做了一项研究:他把一些鸡放进一块不大的养鸡场里观察,这些鸡不是和平、安静地生活在一起,而是打起架来,不一会,从鸡群中走出一只鸡来到鸡食槽,不让其他鸡靠近。公鸡相互厮打了好几天,问题解决了。一级首领“阿尔法”可以啄任何一只鸡;二级首领“贝塔”能赶走除“阿尔法”之外的每一只鸡;“欧米伽”地位最低,群里谁都可以欺负它。

(1)坎贝是用____________方法研究鸡的行为的。

(2)他研究的对象是鸡的个体还是群体?__________________。

(3)鸡群中发生了什么?___________。结果怎样?_______________。这个行为最明显的特征是_________________。

(4)上述结果对鸡群有什么意义?

题型:单项选择题

向等质量的镁条和铁片中分别加入足量且溶质质量分数相等的稀盐酸,有关量的关系图像如下,其中错误的是  

 

题型:单项选择题

When I was fifteen, I announced to my English class that I was going to write and illustrate my own books. Half the students sneered. The rest nearly fell out of their chairs laughing. “Don’t be silly, only geniuses can become writers,” the English teacher said, “And you are getting a D this semester.” I was so humiliated(羞辱) that I burst into tears.

That night I wrote a short sad poem about broken dreams and mailed it to the Capri’s Weekly newspaper. To my astonishment, they published it and sent me two dollars. I was a published and paid writer. I showed it to my teacher and fellow students. They laughed. “Just plain dumb luck,” the teacher said. I tasted success. I’d sold the first thing I’d ever written. That was more than any of them had done and if it was just dumb luck, that was fine with me.

During the next two years I sold dozens of poems, letters, jokes and recipes. By the time I graduated from high school, with a C minus average, I had scrapbooks filled with my published work. I never mentioned my writing to my teachers, friends or my family again. They were dream killers and if people must choose between their friends and their dreams, they must always choose their dreams.

I had four children at the time, and the oldest was only four. While the children slept, I typed on my ancient typewriter. I wrote what I felt. It took nine months, just like a baby.

A month later Crying Wind, the title of my book, became a best seller, was translated into fifteen languages and Braille and sold worldwide. I appeared on TV talk shows. I traveled from New York to California and Canada on promotional tours. My first book also became required reading in native American schools in Canada.

People ask what college I attended, what degrees I had and what qualifications I have to be a writer. The answer is: “None.” I just write. I’m not a genius. I’m not gifted and I don’t write right. To all those who dream of writing, I’m shouting at you: “Yes, you can. Yes, you can. Don’t listen to them.” I don’t write right but I’ve beaten the odds. Writing is easy, it’s fun and anyone can do it. Of course, a little dumb luck doesn’t hurt.

小题1:Why did many students laugh after hearing what the writer said?

A.Because they didn’t like him

B.Because they wished he could be successful as a writer

C.Because their teacher laughed, too

D.Because they felt it impossible for him to succeed小题2:When the writer graduated from high school, ___________.

A.he had become a famous writer

B.he had made progress in his studies.

C.his classmates and teachers changed their attitudes towards him

D.he decided he wouldn’t become a writer小题3:What prevented him telling others about his writing?

A.The characters in his story.

B.His teacher.

C.His early experience.

D.His parents.小题4:What can we infer from the passage?

A.It is difficult for a person, who cares about what others say, to succeed.

B.It is important for a person to tell others what he wants to do.

C.It is necessary for a person, who wants to succeed, to take others’ advice.

D.It is impossible for an ordinary person to be a writer in the future.小题5:Which of the following is the best title?

A.A famous writer

B.I Hate My Classmates and Teachers

C.I Never Write Right

D.A Genius Can Be a Writer

题型:单项选择题

Lb4B2083三管法高喷灌浆所使用的喷管一般分为并列式和同心式两种。

题型:单项选择题

慢性阻塞性涎腺炎的主要造影表现是

A.主导管扩张

B.主导管呈花边状、羽毛状葱皮状

C. 末梢导管扩张

D.腺泡充盈缺损

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