试题与答案

试述小儿横纹肌肉瘤的临床表现。

题型:问答题

题目:

试述小儿横纹肌肉瘤的临床表现。

答案:

参考答案:小儿横纹肌肉瘤的临床表现:(1) 头颈部横纹肌肉瘤:眼球突出、声音改变、吞咽困难、呼吸梗阻、咳嗽及外耳道有分泌物。如侵及神经则发生疼痛,出现脑症状,如发生转移则出现相应的症状。(2) 泌尿生殖系统横纹肌肉瘤:① 膀胱横纹肌肉瘤:常出现膀胱出口梗阻,偶尔伴发尿路感染、急性尿潴留或有组织碎屑从 * * 排出,血尿并不多见。体检时耻骨上肿物可被误诊为膨胀的膀胱。静脉尿路造影50%以上可见上尿路扩张,膀胱内可见不规则充盈缺损。内腔镜可见灰白色息肉样肿物,取活体病理检查可肯定诊断。在女性膀胱横纹肌肉瘤可自 * * 口脱出。② 前列腺横纹肌肉瘤:由于浸润膀胱颈部及前列腺部 * * 导致膀胱出口梗阻,如浸润直肠可致便秘。肛管指诊易触及肿瘤,耻骨上方可触及胀大的膀胱。静脉尿路造影可见膀胱底抬高,排尿性膀胱 * * 造影可见前列腺 * * 变形。③ * * 及子宫横纹肌肉瘤:多见于6~18个月婴儿,患儿常以肿物脱出, * * 分泌物增多或出血就诊。(3) 胆道横纹肌肉瘤:初发症状有乏力、发热及黄疸,常误诊为传染性肝炎。由于进行性黄疸,右上腹疼及肿块,才诊断为梗阻性黄疸。几乎所有病例都有直接或间接胆红素增高及血清碱性磷酸酶增高。剖腹探查见胆管扩张,被葡萄状肉瘤所充满。肿瘤局部蔓延可侵及肝、胰、大网膜及附近组织。

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题型:阅读理解

Although Thomas Edison created the technologies behind three major 21st century industries  electrical power,recorded music and movies—his greatest invention may have been the modern method of inventing.He basically came up with the modern system of research and development.Edison was not the only scientist doing research in his garage but someone who gathered around him a team of creative scientific minds.Edison’s 1aboratories were the forerunners(先驱)of Apple,Google and Microsoft.

Yet for a11 his scientific gifts,he was no Steve Jobs or Bill Gates.He once said,“Anything that won’ t sell,I don’ t want to invent.” But Edison,unlike Jobs or Gates,had no real sense of what the public wanted or how to change his discoveries into products that might sell.It took him years to understand that the phonograph(留声机)was not a business tool but an entertainment invention.He helped create movies but resisted the idea that people might want to go into a theater to watch one.

We chose Edison this year because we need his example now more than ever.Though we live in a time of great reformation,the U.S.is in danger of losing its advantage in science and technology.American investment(投资)in research and development has not increased as a percentage of GDP since the mid一1980s,while the government’ s share has been dropping.And this is at a time when China is rapidly increasing its money on research and development.The U.S.was once among the 1eading nations.Now it ranks near the bottom of the 23 nations that collect such data.We hope that Edison’ s story might not only encourage reformation but also inspire more

young Americans to study science and engineering.

小题1:The first paragraph is mainly about        .

A.the number of Edison’ s great inventions

B.Edison’ s special personal characters

C.Edi son’ s modern system of research

D.Apple.Google and Microsoft and their forerunners小题2:Which of the following is TRUE according to the passage?

A.A11 the things Edison invented sold well.

B.Edison wanted to invent things that sold well.

C.Edison’ s inventions were not valuable for being unpopular.

D.Edison had a gift for changing his discoveries into best sellers.小题3:The author’ s main purpose is to   

A.inform US of the danger the USA is in

B.get young Americans to study science

C.be in honor of Edison for his contributions

D.tell US how important Edison’ s inventions are小题4:We can infer from the text that   

A.the USA is no 10nger advanced in science and technology

B.the USA falls behind China in research and inventions

C.more and more young Americans will be interested in science

D.China is spending more and more money on research and development

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