考前必看:2021年考研英语工学类阅读理解模拟题及答案(三十五)

发布时间:2020-10-12


最近,有小伙伴在询问最后阶段,考研英语该如何备考才最有效。最后阶段,我们应该将备考的重点放在复习和了解考试上,多去练习历年真题和模拟试题。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,一起来看看吧。

BACK in 1922 Thomas Edison predicted that the motion picture is destined to revolutionize our educational system and……in a few years it will supplant largely if not entirely the use of textbooks. Well we all make mistakes. But at least Edison did not squander vast quantities of public money on installing cinema screens in schools around the country.

With computers the story has been different. Many governments have packed them into schools convinced that their presence would improve the pace and efficiency of learning. Large numbers of studies some more academically respectable than others have purported to show that computers help children to learn. Now however a study that compares classes with computers against similar classes without them casts doubt on that view.

In the current Economic Journal Joshua Angrist of the Massachusetts Institute of Technology and Victor Lavy of the Hebrew University of Jerusalem look at a scheme which put computers into many of Israel\'s primary and middle schools in the mid-1990s. Dr Angrist and Dr Lavy compare the test scores for maths and Hebrew achieved by children in the fourth and eighth grades (ie aged about nine and 13) in schools with and without computers. They also asked the classes\' teachers how they used various teaching materials such as Xeroxed worksheets and of course computer programs. The researchers found that the Israeli scheme had much less effect on teaching methods in middle schools than in elementary schools. It also found no evidence that the use of computers improved children\'s test scores. In fact it found the reverse. In the case of the maths scores of fourth-graders there was a consistently negative relationship between computer use and test scores.

The authors offer three possible explanations of why this might be. First the introduction of computers into classrooms might have gobbled up cash that would otherwise have paid for other aspects of education. But that is unlikely in this case since the money for the programme came from the national lottery and the study found no significant change in teaching resources methods or training in schools that acquired computers through the scheme.

A second possibility is that the transition to using computers in instruction takes time to have an effect. Maybe say the authors but the schools surveyed had been using the scheme\'s computers for a full school year. That was enough for the new computers to have had a large (and apparently malign) influence on fourth-grade maths scores. The third explanation is the simplest that the use of computers in teaching is no better (and perhaps worse) than other teaching methods.

The bottom line says Dr Angrist is that the costs are clear-cut and the benefits are murky. The burden of proof now lies with the promoters of classroom computers. And the only reliable way to make their case is surely to conduct a proper study with children randomly allocated to teachers who use computers and teachers who use other methods including the cheapest of all chalk and talk.

(1):本文选自Economist;10/26/2002 p74;

(2):本文习题命题模仿对象是1999年真题text4(1 2 3 4)text14(5);

1. We can learn from the first paragraph that __________________.

[A] motion picture has revolutionized education system

[B] Edisons prediction has been proved wrong

[C] Edison encouraged schools to install cinema screens

[D] schools are cautious about Edisons idea

2. Dr. Angrist and Dr. Lavy have done the following except _______________.

[A] comparing the test scores of students in different age groups

[B] interviewing teachers about their teaching methods

[C] launching the computer program in many Israeli schools

[D] explaining students school performance

3. According to Dr. Angrist and Dr. Lavy in the Israeli scheme students didnt make

improvement in their test scores because______________.

[A] other aspects of education were affected due to cash shortage

[B] it was not long enough for the program to take effect

[C] there was a negative relationship between computer use and test scores

[D] the use of computer was no better than other teaching methods

4. It can be inferred from the last paragraph that ________________.

[A] there hasnt been a proper study on this issue yet

[B] school authorities should provide proof to support the computer program

[C] installing computers in schools costs too much but has little or no effect

[D] chalk and talk work better than computer in teaching

5. The authors attitude towards governments packing computers in schools seems to be

___________________.

[A] biased

[B] indifferent

[C] disapproving

[D] puzzling

答案:BCDAC

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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。

按照CAPM的说法,可以推出()

A.若投资组合的A值等于1,表明该组合没有市场风险
B.某资产的系数小于零,说明该资产风险小于市场平均风险
C.在证券的市场组合中,所有证券的#系数加权平均数为1
D.某资产的系数大于零,说明该资产风险大于市场平均风险
答案:C
解析:
B项说明,该资产与市场波动相反。

甲为泄愤.在20楼的家中向楼下人群中丢一烟灰缸,砸死人群中的乙。甲的行为属于

A.以危险方法危害公共安全罪
B.投放危险物质罪
C.故意杀人罪
D.过失致人死亡罪
答案:C
解析:
以危险方法危害公共安全罪是指使用与放火、爆炸、决水、投放危险物质罪方法的危险性相当的其他危险方法,危害公共安全的行为。注意本罪的客体是公共安全,即以不特定的多数人或者财物为侵害对象。不要把不特定简单理解为是谁都可以,这里不特定是指受害范围大小是不特定的。甲丢下一个烟灰缸无论砸到谁,也只能砸到一个人,因此不可能危害公共安全。A选项错误。投放危险物质罪是指故意针对不特定的多数人或者重大公私财产投放毒害性、放射性、传染病病原体等物质危害公共安全的行为:这里的危险物质必须是毒害性、放射性、传染病病原体等通过化学作用的方式危害人、财、物的物质,而不是指任何具有危险性的物质。B选项错误。甲明知自己的行为可能会造成他人死亡的危害后果,仍然实施了危害行为,放任危害后果发生,造成了乙死亡的后果,成立故意杀人罪(间接故意)。C选项正确。过失分为过于自信的过失和疏忽大意的过失,过于自信的过失行为是指行为人预料到危害结果可能发生,但轻信能够避免,结果未能避免造成了损害结果发生的行为;疏忽大意的过失行为是指行为人应当预料但未能预料到可能发生危害社会的结果,造成损害结果发生的行为。本题里甲明知可能发生危害后果,但未采取任何手段避免危害,对危害结果发生存在放任心态,因此不能构成过失致人死亡罪。D选项错误。

患者,男,45岁。2个月来反酸、反食和烧心,多于餐后明显,平卧或身体前倾时易出现,近1周来加重,有时伴胸骨后疼痛,ECG未见明显异常,内镜检查见食管黏膜破损有融合。
若需维持治疗,选用的最佳药物是
A.雷尼替丁 B.奥美拉唑 C.枸橼酸铋钾 D.莫沙比利

答案:B
解析:
胃食管反流病具 有慢性复发倾向,为减少复发,防止食管炎反复复发引起的并发症,需行维持治疗。H2受体拮抗剂和质 子泵抑制剂都可用于维持治疗,但以质子泵抑制剂疗效最好。

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