仿真练习：2021年考研英语模拟试题(2020-10-18)

发布时间：2020-10-18

目前，2021年考研初试备考时间已不足三个月，不知各位小伙伴复习的如何了？在最后阶段，我们最需要做的是了解考试，而试题练习无疑是非常不错的方法。为了帮助大家备考，51题库考试学习网在下面为大家带来考研初试的一些模拟试题，一起练起来吧。

Text4

The winner takes all, as is widely supposed in computing circles.Indeed, geeks have coined a word,“Googlearchy”, for the way in which search engines encourage web traffic towards the most popular sites.The belief that search engines make popular websites even more fashionable, at the expense of other pages, is now being challenged by research.

The apparently magical ability of search engines such as Google to return relevant websites even when given the sketchiest of clues by the person entering a question relies on the use of mathematical recipes or algorithms(计算程序).Google works by analyzing the structure of the web itself.Each of its billions of pages can link to other pages and can also, in turn, be linked to by others.If a page is linked to many other pages, it is flagged up as being important.Furthermore, if the pages that link to this page are also important, then that page is even more likely to be important.The algorithm has been made increasingly complex over the years, to deter those who would manipulate their pages to appear higher in their rankings, but it remains at the heart of Google’s success.

Google is not alone in this.Many search engines take account of the number of links to a website when they return the results of a search.Because of this, there is a widespread belief among computer, social, and political scientists that search engines create a vicious circle that amplifies the dominance of established and already popular websites.Page returned by research engines are more likely to be discovered and consequently linked to by others.

Not so, according to a controversial new paper that has recently appeared on ArViv, an online collection of physics and related papers.In it, Santo Fortunato and his colleagues at Indiana University in America and Bielefeld University in Germany claim that search engines actually have an egalitarian effect that increases traffic to less popular sites.

The researchers developed a model that described two extreme cases.In the first, people browsed the web only by surfing random links.In the second, people only visited pages that were returned by search engines.The researchers then turned to the real world.To their amazement, they found that the relationship between the two did not lie between the extremes suggested by their model but somewhere completely different.It appears to show that the supposed bias in favor of popular pages is actually alleviated by the combination of search engines and people following random links.

36.What can we infer from the first three paragraphs?

\[A\] Mathematical methods help search engines become more popular.

\[B\] The web information seems to be dominated by Google alone.

\[C\] Sociologists argue that search engines alleviate the inequality of websites.

\[D\] The ability of search engines is dependent on using algorithms.

37.According to the text, the importance of a page is determined by.

\[A\] controlling other pages

\[B\] the number of its links to other pages

\[C\] using mathematical methods

\[D\] the structure of the web itself

38.The foremost reason why Google is successful is no other than.

\[A\] its magical ability

\[B\] its higher page rankings

\[C\] complexity of its algorithms

\[D\] its heavy web traffic

39.Santo Fortunato and his colleagues seem to suggest that.

\[A\] fair effect is created by increasing traffic to less well known sites

\[B\] popular websites are made more fashionable by search engines

\[C\] the situation in favor of popular pages has become more serious

\[D\] Popular pages are more likely to be discovered by random links

40.The author seems to be mainly concerned with.

\[A\] prejudice against less popular websites

\[B\] equality of search engines

\[C\] key to Google’s success

\[D\] negative effects of search engines

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：目前2021年考研大纲已经公布，小伙伴们在复习时要注意以大纲为准哦。另外，小伙伴们如果还有其他关于考研信息的疑问，也可以留言咨询哦。

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。

答案：
解析：
下列犯罪中属于告诉才处理的犯罪有（）。
A.侵占罪 B.侮辱罪 C.遗弃罪 D.虐待罪

答案：A,B,D
解析：
【详解】
告诉才处理的犯罪，刑法中规定有侮辱罪、诽镑罪、暴力干涉婚姻自由罪、虐待罪、侵占罪。故选ABD。
关于内含子和外显子的叙述，正确的是
A. hnRNA既有内含子也有外显子 B.成熟mRNA无内含子
C.套索RNA由外显子组成 D.内含子和外显子间隔排列

答案：A,B,D
解析：
hnRNA(不均一核RNA)是mRNA的未成熟前体。在合成mRNA过程中，hnRNA核苷酸链中的 一些片段将不出现在成熟mRNA中，这些片段称内含子。保留于mRNA中的片段称外显子。hnRNA转 变为成熟mRNA时，切除了一些片段，保留的片段重新合成mRNA。可见hnRNA是既含内含子又含外 显子的RNA。在mRNA剪接时，内含子弯曲，使相邻的两个外显子互相靠近而利于剪接，称套索RNA， 因此套索RNA由内含子和外显子组成。内含子和外显子是间隔排列的。

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。

站内搜索
热门标签