考前必看：2021年考研英语法学类阅读理解模拟题及答案（七）

发布时间：2020-10-14

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。

There is extraordinary exposure in the United States to the risks of injury and death from motor vehicle accidents.More than 80 percent of all households own passenger cars or light trucks and each of these is driven an average of more than 11，000 miles each year.Almost one-half of fatally injured drivers have a blood alcohol concentration (BAC) of 0.1 percent or higher.For the average adult，over five ounces of 80 proof spirits would have to be consumed over a short period of time to attain these levels.One third of drivers who have been drinking，but fewer than 4 percent of all drivers，demonstrate these levels.1)Although less than 1 percent of drivers with BACs of 0.1 percent or more are involved in fatal crashes，the probability of their involvements is 27 times higher than for those without alcohol in their blood.There are a number of different approaches to reducing injuries in which drinking plays a role.Based on the observation that excessive consumption correlates with the total alcohol consumption of a country‘s population，it has been suggested that higher taxes on alcohol would reduce both.While the heaviest drinkers would be taxed the most，anyone who drinks at all would be punished by this approach.

To make drinking and driving a criminal offense is an approach directed only at drinking drivers.In some states，the law empowers police to request breath tests of drivers committing any traffic offense and higher BAC can be the basis for arrest.The National Highway Traffic Safety Administration estimates，however，that even with increased arrests，there are about 700 violations for every arrest.At this level there is little evidence that laws are effective ways to reduce drunk driving.In Britain，motor vehicle accidents fell 25 percent immediately following implementation of the Road Safety Act in 1967. 2) As Britishers increasingly recognized that they could drink and not be stopped，the effectiveness declined，although in the following three years the death-rate seldom reached that observed in the seven years prior to the Act.

Whether penalties for driving with a high BAC or excessive taxation on consumption of alcoholic drinks will deter the excessive drinker responsible for most accidents is unclear.One thing is clear，however：unless we deal with automobile and highway safety and reduce accidents in which alcoholic drinking plays a role，many will continue to die.

1.The author is primarily concerned with____.

[A] interpreting the results of surveys on traffic accidents

[B] reviewing the effectiveness of attempts to reduce drunk driving

[C] analyzing the causes of the large number of annual traffic deaths

[D] making an international comparison of experience with drunk driving

2.It can be inferred that the 1967 Road Safety Act in Britain____.

[A] changed an existing law to lower the BAC level which defined drunk driving

[B] made it illegal for the drunk driver to drive

[C] increased the number of drunk driving arrests

[D] placed a tax on the sale of alcoholic drinks

3.The author implies that a BAC of 0.1 percent ____.

the sale of alcoholic drinks

[A] is unreasonably high as a definition of drunk driving

[B] penalizes the moderate drinker while allowing the heavy drinker to consume without limit

[C] is well below the BAC of most drivers who are involved in fatal crashes

[D] proves that a driver has consumed five ounces of 80 proof spirits over a short time

4.The author cites the British example in order to____.

[A] show that the problem of drunk driving is worse in Britain than in the U.S.

[B] prove that stricter laws against drinking drivers would reduce traffic deaths

[C] prove that a slight increase in the number of arrests of drunk drivers will not deter drunk driving

[D] suggest that taxation of alcohol consumption may be more effective than criminal laws

5.The word“deter”in the last paragraph probably means____.

[A] prevent [B] encourage [C] punish [D] threaten

参考答案：

1.[B] 本文探讨了饮酒和汽车事故率的关系，以及相应的限制酒后驾驶的法律对事故率的影响。这在最后一段体现得最为明显。

2.[B] 第二段第一句是这一段的主题句。英国的例子旨在说明，在英国，在刚刚实施新的道路安全法——根据本段第一句该项法律肯定也将酒后(超过规定含量)驾驶视为刑事犯罪——以后，汽车事故少了，但是，因为根据这项法律可以被逮捕的人是血液内酒精含量(BAC)超过一定标准的人，并不是所有酒后驾车的人，所以人们后来认为喝少量酒也没有关系，这样，这项法律的效力也就下降了。

3.[A] 根据第一段第五、六句，1/3的酒后驾车者能达到这个含量(BAC of 0.1 %)，但是这还不到所有驾驶员人数的4 %.虽然在达到或超过0.1 %的人中不到l %卷人致命的事故中，但是，他们出事的可能性是不喝酒的人的28倍。由此可见，在作者看来，还有很多没有达到这个含量的人也同样危险，因此，0.1 %的含量标准太高了。

4.[C] 参阅第2题题解。

5.[A] 该词意为“阻止”。

以上就是51题库考试学习网为大家带来的全部内容，希望能给大家一些帮助。51题库考试学习网提醒：以上内容仅为参考，在做试题练习时，小伙伴们还是要以考研大纲为准，有针对性的去做题哦。最后，51题库考试学习网预祝参加2021年考研初试的小伙伴都能取得优异的成绩。

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。

---

设每次试验成功的概率为0.2,失败的概率为0.8,设独立重复试验直到成功为止的试验次数为X,则E(X)=_______.

答案：1、5

解析：

---

供氧不足时,3-磷酸甘油醛脱氢产生的NADH+ H +的主要去路是
A.参加脂肪酸的合成 B.使丙酮酸还原生成乳酸C.维持GSH处于还原状态 D.经磷酸甘油穿梭进入线粒体氧化
E.经苹果酸-天冬氨酸穿梭进入线粒体氧化

答案：B

解析：

糖有氧氧化和无氧酵解有一段共同途径，即葡萄糖→丙酮酸。①在氧充足时进行有氧氧化，胞浆中3-磷酸甘油醛在3-磷酸甘油醛脱氢酶催化下转变为1，3-二磷酸甘油酸+NADH +H+ 。NADH +H+经α-磷酸甘油穿梭或苹果酸-天冬氨酸穿梭，转移到线粒体内进行氧化，产生1.5ATP或2. 5ATP。②在供 氧不足时进行无氧酵解,3-磷酸甘油醛脱氢产生的NADH+H+，提供给乳酸脱氢酶,使丙酮酸在胞液中还 原成乳酸。③由于试题所给条件就是“无氧”，因此解题时首先排除含“氧化”二字的D、E项。④参与脂 酸合成、维持GSH处于还原状态，所需的氢主要由NADPH +H +提供，而不是NADH +H+提供。

---

下列符合中度有机磷中毒时的胆碱酯酶活力是
A. 35% B. 25% C. 15% D.10%

答案：A

解析：

血胆碱酯酶活力是诊断有机磷杀虫药中毒的特异性实验室指标，对判断中毒程度、疗效和预后极 为重要。以正常人血胆碱酯酶活力值作为100%，急性有机磷中毒时，轻度中毒70% -50%，中度中毒 50% -30%，重度中毒 30%。

声明：本文内容由互联网用户自发贡献自行上传，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任。如果您发现有涉嫌版权的内容，欢迎发送邮件至：contact@51tk.com 进行举报，并提供相关证据，工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。