金沙手机网投二〇一八年16月罗马尼亚(România卡塔 尔(阿拉伯语:قطر‎语四级阅读真题

  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:

  Section A

  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。

  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 。

  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。

  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。

  A) assisted I) inhabitants

  B) collaborating J) innovation

  C) consequence K) intended

  D) consumers L) outdoor

  E) creating M) pollutants

  F) detail N) restricted

  G) domestic O) sum

  H) frequently

  Section C(第一套)

  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。

  Passage One

  Questions 46 to 50 are based on the following passage。

  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。

  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。

  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。

  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。

  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。

  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

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

  “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。

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

  A) Not all of them are symptoms of dementia。

  B) They occur only among certain groups of people。

  C) Not all of them are related to one’s age。

  D) They are quite common among fifty-year-olds。

  47。 What happens as we become aged according to the passage?

  A) Our interaction skills deteriorate。

  B) Some parts of our brain stop functioning。

  C) Communication within our brain weakens。

  D) Our whole brain starts shrinking。

  48。 Which memory-related symptom should people take seriously?

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

  B) Inability to recall details of one’s life experiences。

  C) Failure to remember the names of movies or actors。

  D) Occasionally confusing the addresses of one’s friends。

  49。 What should people do when signs of serious memory loss show
up?

  A) Check the brain’s cognitive reserve。 C) Turn to a professional
for assistance。

  B) Stop medications affecting memory。 D) Exercise to improve
their well-being。

  50。 What is Dr Daffner’s advice for combating memory loss?

  A) Having regular physical and mental checkups。

  B) Taking medicine that helps boost one’s brain。

  C) Engaging in known memory repair activities。

  D) Staying active both physically and mentally。

  Section C(第二套)

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