每日一练:2021年考研英语二模拟试题(2020-10-10)

发布时间:2020-10-10


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。

PartReading Comprehension

SectionA

Directions: There are 4 passages in this part .Each of the passages is followed by 5 questions or unfinished statements. For each of them there are 4 choices marked A, B, C and D. Choose the best one and mark your answer on the ANSWER SHEET(40points)

Passage One

As any homemaker who has tried to keep order at the dinner table knows, there is far more to a family meal than food. Sociologist Michael Lewis has been studying 50 families to find out just how much more

Lewis and his co-workers carried out their study by videotaping the families while they ate ordinary meals in their own homes. They found that parents with small families talk actively with each other and their children. But as the number of children gets larger, conversation gives way to the parents efforts to control the loud noise they make. That can have an important effect on the children. In general the more question-asking the parents do, the higher the childrens IQ scores, Lewis says. And the more children there are, the less question-asking there is.

The study also provides an explanation for why middle children often seem to have a harder time in life than their siblings. Lewis found that in families with three or four children, dinner conversation is likely to center on the oldest child, who has the most to talk about, and the youngest, who needs the most attention. Middle children are invisible, says Lewis. When you see someone get up from the table and walk around during dinner, chances are that its the middle child. There is, however, one thing that stops all conversation and prevents anyone from having attention: When the TV is on, Lewis says, dinner is a non-event.

21. The writers purpose in writing the text is to

A. show the relationship between parents and children

B. teach parents ways to keep order at the dinner table

C. report on the findings of a study

D. give information about family problems

22. Parents with large families ask fewer questions at dinner because

A. they are busy serving food to their children

B. they are busy keeping order at the dinner table

C. they have to pay more attention to younger children

D. they are tired out having prepared food for the whole family

23. By saying Middle children are invisible in paragraph 3, Lewis means that middle children

A. have to help their parents to serve dinner

B. get the least attention from the family

C. are often kept away from the dinner table

D. find it hard to keep up with other children

24. Lewis research provides an answer to the question

A. why TV is important in family life

B. why parents should keep good order

C. why children in small families seem to be quieter

D. why middle children seem to have more difficulties in life

25. Which of the following statements would the writer agree to?

A. It is important to have the right food for children

B. It is a good idea to have the TV on during dinner

C. Parents should talk to each of their children frequently

D. Elder children should help the younger ones at dinner

参考答案及解析

21. [答案]C

[解析]主旨大意题。

22. [答案]B

[解析]文章第二段提到conversation gives way to the parents efforts to control the loud noise they make. 故正确答案应该选择B

23. [答案]B

[解析]文章第三段提到 Lewis found that in families with three or four children, dinner conversation is likely to center on the oldest child, who has the most to talk about, and the youngest, who needs the most attention. 可以看出老大和老小都是谈话的焦点,只有中间的孩子是被人忽视的。

24. [答案]D

[解析]推理判断题。Lewis的研究表明中间的孩子不受重视,可以推断出这对他们将来的生活会造成一定的影响。

25. [答案]C

[解析]对错判断题。A原文没有提到,BD可以用排除法排除。

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。

在下列DNA突变中,可能仅改变一个氨基酸的是

A.缺失
B.插入
C.点突变
D.重排
答案:C
解析:
(P301)“由于密码子的简并性,点突变即单个碱基置换并非一定发生氨基酸编码的改变,碱基置换可以造成改变氨基酸编码的错义突变、变为终止密码子的无义突变和不改变氨基酸编码的同义突变”(C对)。
由于密码子的连续性,在开放阅读框中发生插入或缺失1个或2个碱基的基因突变,都会引起mRNA阅读框架发生移动,称为移码,使后续的氨基酸序列大部分被改变,其编码的蛋白质彻底丧失功能,称为移码突变(A、B错)。重排使氨基酸序列整体发生变化,不可能仅改变一个氨基酸(D错)。点突变即单个碱基置换可以造成改变氨基酸编码的错义突变(C对)。

噬神经细胞现象是指
A.少突胶质细胞围绕变性神经细胞 B.小胶质细胞吞噬变性神经细胞
C.小胶质细胞和中性粒细胞吞噬变性神经细胞 D.淋巴细胞围绕小血管浸润

答案:B
解析:
①淋巴细胞套是指流行性乙型脑炎时脑组织水肿,脑实质血管高度扩 张充血,血管周围间隙增宽,以淋巴细胞为主的炎细胞常围绕血管周围间隙形成袖套状浸润。②乙型脑 炎可出现神经细胞的变性坏死,表现为神经细胞肿胀、尼氏小体消失,严重者核浓缩、溶解、消失,被增生 的少突胶质细胞包绕,若一个神经元被5个或5个以上的少突胶质细胞围绕,称为“卫星现象”。③小胶 质细胞并不是真正的胶质细胞,而属于单核巨噬细胞系统。当乙型脑炎发生神经细胞变性坏死时,小胶 质细胞或血源性巨噬细胞吞噬坏死的神经元,称为“噬神经细胞现象”(7版病理学P304)。注意:6版病 理学认为“噬神经细胞现象”为小胶质细胞和中性粒细胞侵入变性坏死的神经细胞内。因此449题按7 版病理学答案为B,若按6版病理学答案为C。

马克思指出:“被抽象地孤立地理解的、被固定为与人分离的自然界,对人说来也是无”。这说明

A.自然界的客观实在性是不存在的
B.人与自然界是两个完全分离的世界
C.人类世界是人的实践活动在自在世界基础上建造的属人世界
D.人与自然的关系是思维与存在的关系
答案:C
解析:
本题考核的知识点是:自在世界、人类世界与人的实践活动的相互关系。

【正确分析】人类世界与人的活动不可分离:人化自然是被人的活动改造过的自然,它体现了人的需要、目的、意志和本质力量;人的社会关系则是人的活动的对象化。人不断通过自己的实践活动在自在世界的基础上建造属人世界,属人世界是人的实践活动的对象化,是人的对象世界。马克思原文强调的是,与人的实践活动无关的自在世界,对人类来说是毫无意义的,人是生活在自己创造的属人世界之中。当然,这并不意味着马克思否定自然界的先在性,这个命题是建立在物质第一性原理基础之上的。因此,本题的正确答案是C选项。

【干扰分析】A选项自然界具有客观实在性。B选项人与自然不相分离,人在遵循自然规律的基础上认识和改造自然。D选项把人与自然的关系看作是思维与存在的关系不正确。

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