问题 单项选择题

动脉导管未闭血液分流量的大小取决于

A.年龄大小

B.左心室压力负荷大小

C.右心室容量负荷大小

D.导管的类型

E.导管的粗细和主、肺动脉压力差

答案

参考答案:E

解析:导管的粗细和主、肺动脉压力差是动脉导管未闭血液分流量大小的决定因素。

阅读理解与欣赏

阅读《斜塔上的实验》,完成1—4题

  教学之余,伽利略更忙于实验。他说,他的目的是重新检验亚里土多德有关科学的学说,而不是把这些学说当做福音真理来接受。他发现真理的道路,不是靠背诵亚里士多德的著作,而是通过学习“大自然这本宝书”。

  学生们听了他的讲课,不客气地嘲笑他。有些教授也骂得他狗血喷头。这个不知天高地厚的后生小子想要干什么?他居然把亚里土多德的神圣的卷帙从书架上搬走,而代之以绳索、锡块、杠杆,圆形的、多角形的、平面的这样那样滑稽的玩意儿。不是吗,这些都是小孩子的玩具,是不可以作为严肃地研究宇宙秘密的工具的。“制止这种胡闹!”他们威胁说,否则,他们就将给他一顿教训,叫他永不会忘记。

  伽利略拒绝停止他的实验,因此他们就决定将威胁付诸行动。与亚里土多德的教导相反,伽利略认为,如果两个不同重量的物体同时从同一高度落下,就会同时落地。这帮教授认为,这完全是胡说八道。“除了傻瓜,没有人会相信一根羽毛同一颗炮弹能以同样速度通过空间下降。”现在正是揭穿伽利略的荒唐,叫他永世不得翻身的时候了。他们要让他在大学的全体教授和学生面前当场出丑,使他愚笨的学说当场被揭穿。

  伽利略很乐于接受这个挑战。为这次“表演”选定的地点是比萨斜塔。指定的日期到了,教授们穿着他们的紫色丝绒长袍,整队走到塔前。学生们和镇上的很多人则走在这些人的前面。大家吵吵嚷嚷,兴高采烈,准备看伽利略出洋相,对他的人品宣判死刑。

  当伽利略一步一步爬上斜塔时,大家都嘘他。他一只手拿着一个10磅重的铅球,另一只手拿着一个1磅重的铅球。时间到了,伽利略让两个铅球从塔顶同时落下。大家先是一阵嘲弄的哄笑——随之是大吃一惊的窃窃私语。难以相信的事情真的发生了!两个重量不同的铅球,同时从塔顶下落,同时越过空中,同时落到地上。

  伽利略用实验证明了他的理论。

1.“伽利略用实验证明了他的理论。”请你根据选文内容,用准确而简洁的语言说出这一理论的具体内容。

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2.对斜塔上的实验,教授们和伽利略都很关注和期待,请结合选文内容说说他们各自期待的分别是什么。

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3.“兴高采烈”是一个褒义成语,可是选文却用来形容那些嘲笑伽利略的人,你认为这样使用成语恰当吗?请结合语境谈谈你的看法。

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4.伽利略临终前说的最后一句话是“追求科学,需要特殊的勇气”,请结合全文,概括伽利略“特殊的勇气”表现在哪些方面。

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阅读理解

第三部分:阅读理解(共两节,满分40分)

第一节(共15小题,每题2分,满分30分)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

The days of a pain-free visit to the dentist may not be far off. This is thanks to a little Japanese woman in a pink sweater, named Simroid. With a limited vocabulary, Simroid, the 160cm-tall robot is happy to feel your pain.

Simroid is designed to be used at medical colleges. She has realistic looking skin, eyes, and a mouth fitted with replica (仿制) teeth. Her chest also rises and falls as if she is breathing. Simroid releases a clear “ouch!” whenever a trainee dentist presses her teeth too hard with a tool. And she gives a reassuring “that’s better” when the drill hits the right place.

“We want to use the robots to train dentists to worry about whether patients are comfortable, and not just focus on medical techniques,” said Naotake Shubui, a professor at Nippon Dental University in Japan who helped develop Simroid.

The robot was one of hundreds of cutting-edge devices on display at the world’s biggest robot exhibition last week in Japan.

As scientists improve the design of robots, they could soon be serving tea to office workers or directing shoppers. Today’s robots look and act much like the humans who invented them.

In Japan, robots can already be found working as home helps, office receptionists and security guards, as well as on the factory floor. There were more than 370,000 industrial robots in use in Japan in 2005, according to a report by Macquarie bank,40 percent of the world total, with 32 robots for every 1,000 workers. The economy ministry believes that the Japanese robot market will be worth more than $52 billion by 2025.

Human work is being helped, and even replaced, by mechanical efficiency in almost every area, from golf-bag carriers to public toilet cleaners.

But many scientists believe the age of the service robot is not far off. It will arrive once machines are capable of connecting with humans on an emotional level. Judging by the Tokyo exhibition, that process has already begun.

56. Simroid is designed to _________.

A. aid dental trainees to focus on their medical techniques

B. train dentists to be able to share patients’ feelings

C. help patients relax during dental surgery

D. serve as the dentists’ assistance during dental surgery

57. Which of the following about Simroid is NOT true according to the text?

A. She is a robotic dental patient with a realistic appearance.

B. She will let out a scream whenever she feels a pain.

C. She can communicate a lot with dentists.

D. She is able to react in a human –like way to mouth pain.

58. We can learn from the text that ________.

A. robots are widely used in Japan

B. Japan has taken the lead in developing robots

C. the Japanese robot market has greatest potential in the world

D. the world’s biggest robot exhibition is held in Japan every year

59. The phrase “that process” in the last paragraph refers to ________.

A. replacing human work with robots

B. improving mechanical efficiency

C. entering the age of the service robot

D. producing a robot capable of connecting with humans on an emotional level