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以下是英语四级第一套卷的阅读试题解析,  

来源:http://www.pthyfx.com 作者:永利集团登录网址-永利集团最新网站 时间:2019-11-25 13:33

  2018年上半年全国大学英语四六级考试于6月16日进行,新浪教育24小时全程关注,为你带来第一手四六级考试资讯。以下是英语四级第一套卷的阅读试题解析:

  2018年上半年全国大学英语四六级考试于6月16日进行,新浪教育24小时全程关注,为你带来第一手四六级考试资讯。以下为英语四级阅读详解:

  Section C

  2018年上半年全国大学英语四六级考试于6月16日进行,新浪教育24小时全程关注,为你带来第一手四六级考试资讯。以下为部分英语四级阅读真题:

  四级阅读Section C第一套

  Passage One

  Direction: There are 2 passages in this section。 Each passage is followed by some questions or unfinished statement。 For each of them there are four choice and our marked A),B),C) and D)。You should decide on the best choice and nark the corresponding letter on Answer sheet2 with a single line through the centre。

  Section A

  Passage One

  Questions 46 to 50 are based on the following passage。

  Passage One

  Directions: In this section, there is a passage with ten blanks。 You are required to select one word for each blank from a list of choices given in a word bank following the passage。 Read the passage through carefully before making your choices。 Each choice in the bank is identified by a letter。 Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre。 You may not use any of the words in the bank more than once。

  46。

  Losing your ability to think and remember is pretty scary。 We know the risk of dementia (痴呆) increases with age。 But if you have memory slips, you probably needn’t worry。 There are pretty clear differences between signs of dementia and age-related memory loss。

  Questions 46 to 50 are based on the following passage。

  Since the 1940s,southern California has had a reputation for smog。 Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst city in the United States for levels of 26 。Gazing down on the city from the Getty Center, an art museum in the Santa Monica Mountains, one would find the view of the Pacific Ocean blurred by the haze(霾)。Nor is the state’s bad air 27 to its south。 Fresno, in the central valley, comes top of the list in America for year-round pollution。 Residents’ hearts and lungs are affected as a 28 。

  A。 Not all of them are symptoms of dementia。

  After age 50, it’s quite common to have trouble remembering the names of people, places and thing quickly, says Dr。 Kirk Daffner of Brigham and Woman’s Hospital in Boston。

  Losing your ability to think and remember is pretty scary。 We know the risk of dementia (痴呆) increases with age。 But if you have memory slips, you probably needn’t worry。 There are pretty clear differences between signs of dementia and age-related memory loss。

  All of which, combined with California’s reputation as the home of technological 29 ,makes the place ideal for developing and testing systems designed to monitor pollution in 30 。And that is just what Aclima, a new firm in San Francisco, has been doing over the past few months。 It has been trying out monitoring that are 31 to yield minute-to-minute maps of 32 air pollution。 Such stations will also be able to keep an eye on what is happening inside buildings, including offices。

  [定位]memory slips 文章第一段

  The brain ages just like the rest of the body。 Certain parts shrink, especially areas in the brain that are important to learning, memory and planning。 Changes in brain cells can affect communication between different regions of the brain。 And blood flow can be reduced as blood vessels narrow。

  After age 50, it’s quite common to have trouble remembering the names of people, places and thing quickly, says Dr。 Kirk Daffner of Brigham and Woman’s Hospital in Boston。

  To this end, Aclima has been 33 with Google’s Street View system。 Davida Herzl, Aclima’s boss, says they have revealed pollution highs on days when San Francisco’s transit workers went on strike and the city’s 34 were forced to use their cars。 Conversely, “cycle to work” days have done their job by 35 pollution lows。

  [解析]文章第一段第二句提到了memory slips,作者说如果你有了memory slips你可能不用担心,因为,dementia(痴呆)的症状和记忆衰退中间的区别相当明显。因此选择A不是所有记忆衰退的征兆都意味着痴呆。BC无中生有,D偷梁换柱,文中讲的是after age 50, 不是among。

  Forgetting the name of an actor in a favorite movie, for example, is nothing to worry about。 But if you forget the plot of the movie or don’t remember even seeing it, that’s far more concerning, Daffner says。

  The brain ages just like the rest of the body。 Certain parts shrink, especially areas in the brain that are important to learning, memory and planning。 Changes in brain cells can affect communication between different regions of the brain。 And blood flow can be reduced as blood vessels narrow。

  A) assisted I) inhabitants

  47。

  When you forget entire experiences, he says, that’s “a red flag that something more serious may be involved。” Forgetting how to operate a familiar object like a microwave oven, or forgetting how to drive to the house of a friend you’ve visited many times before can also be signs of something going wrong。

  Forgetting the name of an actor in a favorite movie, for example, is nothing to worry about。 But if you forget the plot of the movie or don’t remember even seeing it, that’s far more concerning, Daffner says。

  B) collaborating J) innovation

  C。 Communication within our brain weakens。

  But even then, Daffner says, people shouldn’t panic.There are many things that can cause confusion and memory loss, including health problems like temporary stoppage of breathing, high blood pressure, or depression, as well as medications like antidepressants。 Even over-the-counter remedies like antihistamines can contribute to memory loss。

  When you forget entire experiences, he says, that’s “a red flag that something more serious may be involved。” Forgetting how to operate a familiar object like a microwave oven, or forgetting how to drive to the house of a friend you’ve visited many times before can also be signs of something going wrong。

  C) consequence K) intended

  [定位]We become aged,定位到第三段。

  And the best defense against memory loss is to try to prevent it by building up your brain’s cognitive (认知的) reserve, Daffner says。

  But even then, Daffner says, people shouldn’t panic.There are many things that can cause confusion and memory loss, including health problems like temporary stoppage of breathing, high blood pressure, or depression, as well as medications like antidepressants。 Even over-the-counter remedies like antihistamines can contribute to memory loss。

  D) consumers L) outdoor

  [解析]文中提到changes in brain cells can affect communication between different regions of the brain脑细胞的这些变化会影响到脑中不同区域的沟通。因此选C。A选项无中生有,利用常识进行干扰,B偷梁换柱原文只是提到shrink而不是stop functioning,D偷梁换柱Certain parts shrink而不是whole brain

  “Read books, go to movies, take on new hobbies or activities that force one to think in novel ways,” he says。 In other words, keep your brain busy and working。 And also get physically active, because exercise is a known brain booster。

  And the best defense against memory loss is to try to prevent it by building up your brain’s cognitive (认知的) reserve, Daffner says。

  E) creating M) pollutants

  48。

  46。 Why does the author say that one needn’t be concerned about memory slips?

  “Read books, go to movies, take on new hobbies or activities that force one to think in novel ways,” he says。 In other words, keep your brain busy and working。 And also get physically active, because exercise is a known brain booster。

  F) detail N) restricted

  A。 Totally forgetting how to do one’s daily routines。

  A) Not all of them are symptoms of dementia。

  46。 Why does the author say that one needn’t be concerned about memory slips?

  G) domestic O) sum

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