考前必看:2021年考研英语理学类阅读理解模拟题及答案(三)

发布时间:2020-10-12


2021年考研初试备考还有最后的近三个月时间,相信大家也都在紧张的复习当中。在复习时,多做练习题可以让我们更加了解考试内容。下面,51题库考试学习网为大家带来考研初试的一些模拟试题,正在备考的小伙伴赶紧练起来吧。

As you read this nearly 80000 Americans are waiting for a new heart kidney or some other organ that could save their life. Tragically about 6000 of them will die this year——nearly twice as many people as perished in the Sept. 11 attacks——because they won\'t get their transplant in time. The vast majority of Americans (86% according to one poll) say they support organ donation. But only 20% actually sign up to do it. Why the shortfall?

Part of the problem is the way we handle organ donations. Americans who want to make this sort of gift have to opt in——that is indicate on a driver\'s license that when they die they want their organs to be made available. Many European and Asian countries take the opposite approach; in Singapore for example all residents receive a letter when they come of age informing them that their organs may be harvested unless they explicitly object. In Belgium which adopted a similar presumed-consent system 12 years ago less than 2% of the population has decided to opt out.

Further complicating the situation in the U.S. is the fact that whatever decision you make can be overruled by your family. The final say is left to your surviving relatives who must make up their minds in the critical hours after brain death has been declared. There are as many as 50 body parts from your skin to your corneas that can save or transform the life of a potential recipient but for many families lost in grief the idea of dismembering a loved one is more than they can bear.

The U.S. like all medically advanced societies has struggled to find a way to balance an individual\'s rightful sovereignty over his or her body with society\'s need to save its members from avoidable deaths. Given America\'s tradition of rugged individualism and native distrust of Big Brotherly interference it\'s not surprising that voters resisted attempts to switch to a presumed-consent system when it was proposed in California Oregon Minnesota Pennsylvania and Maryland. Health Secretary Tommy Thompson last spring announced plans for a new initiative to encourage donations——including clearer consent forms——but its impact is expected to be modest. Given the crying need for organs perhaps it\'s time we considered shifting to something closer to the presumed-consent model.

Meanwhile if you want to ensure that your organs are donated when you die you should say so in a living will or fill out a Uniform Donor Card (available from the American Medical Association) Make sure your closest relatives know about it. And if you don\'t want to donate an organ you should make your wishes equally explicit.

(1):本文选自Time; 12/10/2001 p117;

(2):本文习题命题模仿对象2003年真题text 3;

1. According to the author one of the reasons for a shortage of organs in America is ______.

[A] most Americans are reluctant to donate their organs after death

[B] the information about organ donation is not popular in America

[C] the ways to handle organ donation is far from perfect

[D] people waiting for transplant are rapidly increasing in America

2. What is most Americans attitude towards the organ donation?

[A] Indifferent.

[B] Indignant.

[C] Detached.

[D] Supportive.

3. It can be inferred from paragraph 4 that ______.

[A] Americans have a long tradition of weak individualism

[B] all the states in America resist the presumed-consent system

[C] its not easy to find a way to serve the societys need and at the same time to protect the individuals right in the matter of organ donation

[D] the government is not active in solving the problem

4. The term presumed-consent probably means ______.

[A] ones organs should be donated whether they agree or not

[B] one is supposed to agree that their organ will be donated after death unless they explicitly object

[C] dismembering a dead body is inhuman

[D] one is assumed to be happy after they decide to donate their organs

5. From the text we can see the authors attitude towards organ donation is ______.

[A] supportive

[B] indignant

[C] indifferent

[D] negative

答案:CDCBA

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下面小编为大家准备了 研究生入学 的相关考题,供大家学习参考。

输血后溶血反应的治疗,给予5%碳酸氢钠溶液的目的是
A.纠正酸中毒 B.对抗高血钾的K+毒性C.清除已破坏的红细胞D.使尿中血红蛋白溶解

答案:D
解析:
输血时发生溶血反应后,给予5%碳酸氢钠溶液250ml静脉滴注,可使尿液碱化,促使血红蛋白 结晶溶解,防止肾小管阻塞,有利于保护肾功能。

以下四种情况中,投资乘数最大的是( )。

A.边际消费倾向为0.6
B.边际消费倾向为0.4
C.边际储蓄倾向为0.3
D.边际储蓄倾向为0.1
答案:A
解析:
投资乘数k=1/(1-β)=l/s其中A为边际消费倾向,s为边际储蓄向,S=1-β。当边际消费倾向为0.3耐,投资乘数为10/7,当边际储蓄倾向0.6时,投资乘数为2.5.当边际储蓄倾向为0.5时,投资乘数为2.当边际储蓄倾向为0.9时,投资乘数为10/9。

A.阳气亢盛,损伤阴精 B. 阳气虚损,阴气无以生,导致阴阳两虚
C.阳气虚衰,阴气相对偏盛D.阳盛至极,热盛于内,排斥阴气于外

阳损及阴是指
答案:B
解析:

设李四仅消费X和y两种商品,他的效用函数为

其中L为消费者闲暇小时数,假定李四的工资为每小时w,商品x和商品y的价格分别是

每周为7天,每天是24小时,劳动工资是其收入的全部来源,求当他每周最大化其效用时: (1)李四将选择每周工作多少小时?并将其收入多大比例用于购买x。 (2)李四消费z的需求价格弹性。 (3)如果李四的收入下降了30%,y的价格下降了50%,他将过得更好还是更坏?

答案:
解析:

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