试题与答案

如图所示,两平行的虚线间的区域内存在有界匀强磁场,有一较小的三角形线框abc的a

题型:选择题

题目:

如图所示,两平行的虚线间的区域内存在有界匀强磁场,有一较小的三角形线框abcab边与磁场边界平行,现使此线框向右匀速穿过磁场区域,运动过程中始终保持速度方向与ab边垂直.则下列图中哪一个可以定性地表示线框在上述过程中感应电流随时间变化的规律?(  )

答案:

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题型:阅读理解与欣赏

阅读下文,完成下面问题。

麻鞋之歌

叶梓

  (1)天水谣曰:秦安褐子清水麻。

  (2)清水,多美妙的名字,多美妙的地方!这样的地方,的确如其所名,有一条碧波荡漾的河,曰牛头河;这样的地方,因为有清清的河水,自然就有上好的麻——如果说清水是深藏于秦州大地东北角的一块绿松石,那遍及四野的麻就是这块绿松石上一簇簇鲜嫩的绒毛。其实,早在久远的《诗经》年代,麻作为一种传统种植作物,就已经成为人们衣着的原料了。这种远至《诗经》年代的植物,至今还在清水一带广泛种植,想想,这是一件多么诗意的事。

  (3)就像小麦呀玉米呀洋芋呀一样,麻乃生灵饮食之需。而麻鞋,显然是饮食之需的一次延伸了,但亦隐隐显现出沉淀在天水人身上深沉的文化情趣。几乎每年夏天,天一热起来,就能看到天水人会穿一双精致的麻鞋出门。当然,那些所谓的爱美的女子,已经不穿了,宁愿去穿一双走起来咣当作响的高跟鞋。你穿你的高跟鞋,我穿我的清水麻鞋--盛载着时光痕迹的麻鞋,在这个灯红酒绿的年代里大抵属于那些老年人和中年人了。像我这种刚过而立之年却喜欢穿麻鞋的人,常常被别人视为神经质。其实,燠热的夏天,穿一双麻鞋,有什么不好呢!防潮防滑又透气,脚下风声习习,医学上有按摩之功效,美学上还有鞋帮上的种种变化万千的图案。

  (4)况且,一双麻鞋的诞生,是真正来自于双手,不似流水线上出来的皮鞋、运动鞋那么枯燥和乏味。它沉浸着手艺的光芒,是农业文明的一则注脚,是一段固定下来的美好时光。

  (5)有一年夏天,我在清水县草川乡的一户贫寒人家,见到了一双麻鞋成为鞋的漫长过程。主人五十开外,憨厚,本分。他每年都种麻,不是为了食麻籽油,而是穿麻鞋。秋天的阳光照在这家的院落里,安静,美好。他在门外大树过滤后的点点阳光里,埋头,认真地做一双麻鞋。先把早就编成的麻辫置于一平案上,盘成底,复用麻绳左右穿紧。这时,他抬头,有点木讷地说:“这就叫千层底。这样,走的路长,脚也舒服。”然后,像栽秧苗一样,在鞋底的边上栽上稍粗一些的麻绳,做成鞋帮,一一串起来,再做成鼻梁。这时,就得用一种清水人名曰楦头的工具,把鞋鼓起来--一双麻鞋的雏形,大抵就出来了--但还远远不够,如同一件精美的艺术品需要不断地打磨一样,麻鞋亦然。老人找出一种专门用来编织的钩针,钩出麻花辫鞋面和鞋耳,做工前备染。鞋遂成。

  (6)老人老了,但眼睛不花,有着和女人一样的精巧的手。他说,做惯了,手哪会生呢!那双有着刀刻般纹理的双手,一挑一钩地完成这些动作时,额角都流出点点汗水。他用袖口一擦,讪讪一笑:“太紧张啦!”

  (7)平常,他一定是一个人在院落里做的。那一定会更加自如,得心应手。

  (8)他还拿出家里攒下来的几双麻鞋。有脚尖顶端是红色麻穗的“慈母思亲”,有“单鞭救主”。每种样式,各有寓意,有的甚至还藏着一个远古的故事或者传说呢。想想,古人真含蓄,把所思所想,隐藏在一双鞋里。这时候,再看它,就会发现,最伟大的文化常常深藏在遥远僻深的民间。我不知道,公元759年流落天水且留下“麻鞋见天子,衣袖露两肘”之佳句的大诗人杜甫,到底是穿一双什么样的麻鞋踟蹰在秦州大地。但在他诗句的背后,我看出了一个诗人的伤感和无奈。莫非,正是一双产自清水的麻鞋,陪着他从天水到陇南,从陇南再南下成都。

  (9)我想,古人既有“革皮之良,莫贵于麻”之说,这就是对麻的一种尊重,是对一种手艺的尊重,更是对大地恩情的尊重。我们善于忘记的现代人,真应该学会尊重手艺和大地。所幸的是,至今,在夏天的清水,尚能看到一双双走在大街上的麻鞋,散发着自然的本质之美,如同一场大自然移动的展览。

  (10)但我更想穿上一双清水麻鞋,流浪在祖国西北的土地上。

1.文章第一节为什么引用天水谣?

 __________________________________________________

2.作者说麻鞋“隐隐显现出沉淀在天水人身上深沉的文化情趣”,请简要分析麻鞋显现出哪些“文化情趣”。

 __________________________________________________

3.文中老人是一个什么样的形象?作品描写这一形象有什么作用?

 __________________________________________________

4.阅读全文,探究“麻鞋之歌”的内涵。

 __________________________________________________

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题型:阅读理解

阅读理解

     Amelia Earhart's (1897-1937) childhood was not the typical girl's.She liked nothing better than to

explore the banks of the Missouri River, where she climbed trees and hunted rats with her rifle (步枪).

She also built her own roller coaster(过山车).

     The exciting life of the American aviation (航空)pioneer is dramatized in the movie Amelia, which is

due to come out on October 23.

     After Earhart paid a pilot $1 to take her up for a short fly in his plane, aviation became her love and

career.

     As she later explained, "Never do things others can do and will do, if there are things others cannot do or will not do."

     Earhart found herself a flying teacher and started to learn to fly.She took all sorts of jobs to pay for the

lessons and to buy a secondhand plane on her 24th birthday.

     In 1932, Earhart flew solo (单人的) across the Atlantic.She became the first woman to make the

solo crossing.She also made a flying suit for women and went on to design other clothes for women who

led active lives."Now and then women should do for themselves what men have already done-occasionally what men have not done -thereby establishing themselves as persons, and perhaps encouraging other

women toward greater independence of thought and action, "she said.

     When she was nearly 40, Earhart was ready for a final challenge-to be the first woman to fly around the world.However, in midflight, she and her navigator (导航员) disappeared in bad weather.

     Earhart will be forever remembered as a brave pioneer for both aviation and women.

1. According to the passage, which of the following statements is true?

A. A movie about Earhart's exciting life has come out.

B. Earhart never did things others could and would do.

C. Earhart's love for aviation came after she flew a plane for a short time.

D. In Earhart's opinion, women should think and act more independently

2. The underlined word in paragraph 2 means________.

A. presented  

B. adopted

C. published  

D. created

3. From the passage we can know that ________.

A. Earhart showed most interest in adventure trips to the Missouri River during her childhood

B. Earhart's ambition was to fly across the Atlantic

C. Earhart challenged herself constantly

D. Besides flying, Earhart also designed planes and clothes

4. You can probably find this article in________.

A. a booklet  

B. a newspaper

C. a guide book  

D. an advertisement

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题型:单项选择题 案例分析题

男性,34岁。盖房子时因土墙垮塌砸伤左小腿。伤后35分钟被送往当地卫生院行清创缝合术。第2天夜间,患者感伤肢沉重感,行走困难,疼痛逐渐加剧,自觉发热,全身无力。次日,病情加重,急来院就诊。查体:T40℃,P130次/分,R20次/分,BP100/60mmHg。痛苦面容,贫血貌。表情淡漠,烦躁,呼吸急促。整个左小腿延至大腿肿胀明显,左小腿下1/3外侧有一4cm长而不规则缝合伤口,周围皮肤苍白、紧张发亮,伤口中有恶臭味的血性液和气泡溢出。触诊肢体有捻发音。实验室检查:RBC2.0×1012/L,Hb40%,WBC12×109/L,N90%。尿常规:血红蛋白尿。左小腿X线平片检查:肌群内有积气阴影。

应用抗生素治疗,首选()

A.第三、四代头孢菌素+甲硝唑

B.青霉素+甲硝唑

C.庆大霉素+甲硝唑

D.卡那霉素+甲硝唑

E.四环素+甲硝唑

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