【单选题】【消耗次数:1】
视力调节
瞳孔括约肌收缩看远物
睫状肌收缩看近物
睫状肌收缩看远物
依靠角膜曲度变化
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相关题目
【单选题】 睫状肌收缩时
①  睫状小带紧张,晶状体变平,适于看近物
②  睫状小带松弛,晶状体变凸,适于看近物
③  睫状小带紧张,晶状体变凸,适于看近物
④  睫状小带紧张,晶状体变平,适于看远物
【单选题】 上直肌收缩时,瞳孔转向()
①  上内
②  上外
③  下内
④  下外
⑤  上方
【判断题】 体内骨骼肌收缩几乎都是单收缩。
①  正确
②  错误
【单选题】 当注视物由远移近时,眼的调节反应为( )
①  晶状体凸度增大,瞳孔散大,视轴会聚
②  晶状体凸度减小,瞳孔散大,视轴会聚
③  晶状体凸度增大,瞳孔缩小,视轴会聚
④  晶状体凸度增大,瞳孔缩小,视轴散开
【单选题】 骨骼肌收缩的原理是:
①  粗、细肌丝之间相互滑行
②  粗肌丝本身缩短
③  粗肌丝向细肌丝内滑行
④  细肌丝本身缩短
⑤  粗、细肌丝同时缩短
【判断题】 机体内骨骼肌的收缩大多表现为长度和张力都变化的混合收缩。
①  正确
②  错误
【判断题】 近距离、长时间用眼引起眼睛睫状肌紧张,是造成儿童近视的主要原因。
①  正确
②  错误
【单选题】 两侧收缩可使头后仰的肌
①  颈阔肌
②  胸锁乳突肌
③  斜角肌
④  枕额肌
⑤  咬肌
【判断题】 瞳孔括约肌与开大肌均是肌上皮细胞。 ( )
①  正确
②  错误
【单选题】 关于骨骼肌收缩机制,下述错误的是()
①  引起兴奋-收缩耦联的离子是Ca<sup>2+</sup>;
②  细肌丝向粗肌丝滑行;
③  Ca<sup>2+</sup> 与横桥结合;
④  横桥与肌纤蛋白结合;
⑤  肌节缩短
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【单选题】 The school was named ________ the hero who gave his life for the cause of the liberation.
①  for
②  with
③  after
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【单选题】 Youdon’thavetobeinsuchahurry,Iwouldratheryou________onbusinessfirst.
①  wouldgo
②  willgo
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【单选题】 Do what you think is right, ________ they say.
①  whatever
②  however
③  whenever
④  whichever
【单选题】 It suddenly ________ him that he should solve the problem with a computer.
①  occurred to
②  struck at
③  hit on
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【单选题】 The most important ________ of his speech was that we should all work whole-heartedly for people.
①  element
②  spot
③  sense
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【单选题】 Thescientistdidn’tmind________ andwentonwithhisinvestigation.
①  laughingat
②  tobelaughedat
③  beinglaughedat
④  laughedat
【单选题】 If you work hard, you will be ________; but if you don’t, you will be punished.
①  relaxed
②  relieved
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④  rewarded
【单选题】 These plastic flowers look so ________ that many people think they are real.
①  natural
②  beautiful
③  artificial
④  similar
【单选题】 For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never-ending flood of words. In getting a job or advancing in one, the ability to read and comprehend quickly can mean the difference between success and failure. Yet the unfortunate fact is that most of us are poor readers. Most of us develop poor reading habits at an early age, and never get over them. The main problem lies in language itself—words. Single words have little meaning until they are combined into phrases, sentences and paragraphs. Unfortunately, however, the untrained reader does not read groups of words. He reads one word at a time, often regressing to reread words or passages. Regression, or looking back over what you have just read, is a common bad habit in reading. Another habit which slows down the speed of reading is vocalization—sounding each word either orally or mentally as one reads. To overcome these bad habits, some reading clinics use a device called accelerator (加速器), which moves a bar down the page at a predetermined speed. The bar is set at a slightly faster rate than the reader finds comfortable, in order to “stretch” him. The accelerator forces the reader to read fast, making word-by-word reading, regression and vocalization virtually impossible. At first, comprehension is sacrificed for speed. But when you learn to read ideas, you will not only read faster, but your comprehension will improve. Many people have found their reading skills improved a lot after some training. According to the passage, today many people read for __________.
①  news
②  their work
③  information
④  entertainment
【单选题】 For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never-ending flood of words. In getting a job or advancing in one, the ability to read and comprehend quickly can mean the difference between success and failure. Yet the unfortunate fact is that most of us are poor readers. Most of us develop poor reading habits at an early age, and never get over them. The main problem lies in language itself—words. Single words have little meaning until they are combined into phrases, sentences and paragraphs. Unfortunately, however, the untrained reader does not read groups of words. He reads one word at a time, often regressing to reread words or passages. Regression, or looking back over what you have just read, is a common bad habit in reading. Another habit which slows down the speed of reading is vocalization—sounding each word either orally or mentally as one reads. To overcome these bad habits, some reading clinics use a device called accelerator (加速器), which moves a bar down the page at a predetermined speed. The bar is set at a slightly faster rate than the reader finds comfortable, in order to “stretch” him. The accelerator forces the reader to read fast, making word-by-word reading, regression and vocalization virtually impossible. At first, comprehension is sacrificed for speed. But when you learn to read ideas, you will not only read faster, but your comprehension will improve. Many people have found their reading skills improved a lot after some training. The following are all bad reading habits EXCEPT __________.
①  regression
②  reading for ideas only
③  vocalization
④  word-by-word reading