英语四级模拟题十四
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Part I Writing (30 minutes)
Directions: For this part, you are allowed 30 minutes to write a composition on the topic: The Best Way to Stay Healthy. You should write at least 120 words according to the outline given below in Chinese:
1.锻炼身体和平衡饮食哪个是保持健康的最佳办法
2.我的观点
The Best Way to Stay Healthy
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Part HReading Comprehension (Skimming and Scanning)(15 minutes)
Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the four choices marked [A], [B], [C]and [D]. For questions 8-10, complete the sentences with the information given in the passage.
How Exercises Work
When you exercise or compete in sports, you notice several things about your body. You breathe heavier and faster, your heart beats faster, your muscles hurt and you sweat. These are all normal responses to exercise whether you work out regularly or only once in a while or whether you are a "weekend warrior" or a trained athlete. When you watch world-class athletes compete, you see the same responses, only magnified.
The body has an incredibly complex set of processes to meet the demands of working muscles. Every system in the body is involved. In this article, we will look at how your body responds to strenuous exercise-how muscles, blood circulation,breathing and body heat are affected. You will also see how these responses can be enhanced by training.
Your Body's Response to Exercise
Any type of exercise uses your muscles. Running, swimming, weightlifting-any sport you can imagine-uses different muscle groups to generate motion. In running and swimming, your muscles are working to accelerate your body and keep it moving. In weightlifiing, your muscles are working to move a weight. Exercise means muscle activity!
As you use your muscles, they begin to make demands on the rest of the body. In strenuous exercise, just about every system in your body either focuses its efforts on helping the muscles do their work, or it shuts down. For example, your heart beats faster during strenuous exercise so that it can pump more blood to the muscles, and your stomach shuts down during strenuous exercise so that it does not waste energy that the muscles can use.
When you exercise, your muscles act something like electric motors. Your muscles take in a source of energy and they use it to generate force. An electric motor uses electricity to supply its energy. Your muscles are biochemical motors, and they use a chemical called adenosine triphosphate ( ATP ) for their energy source. During the process of "burning" ATP, your muscles need three things:
They need oxygen, because chemical reactions require ATP and oxygen is consumed to produce ATP.
They need to eliminate metabolic wastes (carbon dioxide, lactic acid) that the chemical reactions generate.
They need to get rid of heat. Just like an electric motor, a working muscle generates heat that it needs to get rid of.
In order to continue exercising, your muscles must continuously make ATP. To make this happen, your body must supply oxygen to the muscles and eliminate the waste products and heat. The more strenuous the exercise, the greater the demands of
working muscle. If these needs are not met, then exercise will cease--that is, you become exhausted and you won't be able to keep going.
To meet the needs of working muscle, the body has an orchestrated response involving the heart, blood vessels, nervous system, lungs, liver and skin. It really is an amazing system!
Exercise and ATP
For your muscles--in fact, for every cell in your body--the source of energy that keeps everything going is called ATP.
Adenosine triphosp hate (ATP) is the biochemical way to store and use energy.
The entire reaction that turns ATP into energy is a bit complicated, but here is a good summary:
Chemically, ATP is an adenine nucleotide bound to three phosphates.
There is a lot of energy stored in the bond between the second and third phosphate groups that can be used to fuel chemical reactions.
When a cell needs energy, it breaks this bond to form adenosine diphosphate (ADP) and a free phosphate molecule.
In some instances, the second phosphate group can also be broken to form adenosine monophosphate (AMP).
When the cell has excess energy, it stores this energy by forming ATP from ADP and phosphate.
ATP is required for the biochemical reactions involved in any muscle contraction. As the work of the muscle increases, more and more ATP gets consumed and must be replaced in order for the muscle to keep moving.
Because ATP is so important, the body has several different systems to create ATP. These systems work together in phases. The interesting thing is that different forms of exercise use different systems, so a sprinter is getting ATP in a completely different way from a marathon runner!
ATP comes from three different biochemical systems in the muscle, in this order:
~ phosphagen system
~ glycogen-lactic acid system
~ aerobic respiration
Exercise and the Phosphagen System
A muscle cell has some amount of ATP floating around that it can use immediately, but not very much--only enough to last for about three seconds. To replenish the ATP levels quickly, muscle cells contain a high-energy phosphate compound called creatine phosphate. The phosphate group is removed from creatine phosphate by an enzyme called creatine kinase, and is transferred to ADP to form ATP. The cell turns ATP into ADP, and the phosphagen rapidly turns the ADP back into ATP.
As the muscle continues to work, the creatine phosphate levels begin to decrease. Together, the ATP levels and creatine phosphate levels are called the phosphagen system. The phosphagen system can supply the energy needs of working muscle at
a high rate, but only for 8 to 10 seconds.
Exercise and the Glycogen-Lactic Acid System
Muscles also have big reserves of a complex carbohydrate called glycogen. Glycogen is a chain of glucose molecules. A cell splits glycogen into glucose. Then the cell uses anaerobic metabolism (anaerobic means "without oxygen") to make ATP
and a byproduct called lactic acid from the glucose.
About 12 chemical reactions take place to make ATP under this process, so it supplies ATP at a slower rate than the phosphagen system. The system can still act rapidly and produce enough ATP to last about 90 seconds. This system does not ,need oxygen, which is handy because it takes the heart and lungs some time to get their act together. It is also handy because the rapidly contracting muscle squeezes off its own blood vessels, depriving itself of oxygen-rich blood.
There is a definite limit to anerobic respiration because of the lactic acid. The acid is what makes your muscles hurt.
Lactic acid builds up in the muscle tissue and causes the fatigue and soreness you feel in your exercising muscles.
Exercise and Aerobic Respiration
By two minutes of exercise, the body responds to supply working muscles with oxygen. When oxygen is present, glucose can be completely broken down into carbon dioxide and water in a process called aerobic respiration. The glucose can come
from three different places:
~ remaining glycogen supplies in the muscles;
~ breakdown of the liver's glycogen into glucose, which gets to working muscle through the bloodstream;
~ absorption of glucose from food in the intestine, which gets to working muscle through the bloodstream.
Aerobic respiration can also use fatty acids from fat reserves in muscle and the body to produce ATP. In extreme cases (like starvation ), proteins can also be broken down into amino acids and used to make ATP. Aerobic respiration would use
carbohydrates first, then fats and finally proteins, if necessary. Aerobic respiration takes even more chemical reactions to produce ATP than either of the above systems. Aerobic respiration produces ATP at the slowest rate of the three systems, but it can continue to supply ATP for several hours or longer, so long as the fuel supply lasts.
What Happens When You Exercise
So imagine that you start running. Here's what happens:
The muscle cells burn off the ATP they have floating around in about 3 seconds.
The phosphagen system kicks in and supplies energy for 8 to 10 seconds. This would be the major energy system used by
the muscles of a 100-meter sprinter or weight lifter, where rapid acceleration, short-duration exercise occurs.
If exercise continues longer, then the glycogen-lactic acid system kicks in. This would be true for short-distance exercises such as a 200- or 400-meter dash or 100-meter swim.
Finally, if exercise continues, then aerobic respiration takes over. This would occur in endurance events such as an 800- meter dash, marathon run, rowing, cross-country skiing and distance skating.
When you start to look closely at how the human body works, it is truly an amazing machine!
注意:此部分试题请在答题卡1上作答;8-10题在答题卡1上。
1. Your muscles are working to move a weight when you are __
B :weightlifling
C :running
D :high jumping
2. During the process of "burning" ATP, your muscles need __
B :lactic acid
C :carbon dioxide
D :add energy
3. When the cell has excess energy, it stores this energy by forming __
B :AMP
C :ADP
D :ATP
4. The body has several different systems to create __., because it is very important.
B :ADP
C :ATP
D :phosphate molecule
5. Muscle cells contain a high-energy phosphate compound called __
B :creatine phosphate
C :phosphate group
D :enzyme
6. What makes your muscles hurt?
B :ATP
C :Oxygen-rich blood
D :Lactic acid
7. Glucose can be completelybroken down into carbon dioxide and water when oxygen is present in the pr0cess called
B :"burning" ATP
C :aerobic respiration
D :phosphagen system
8. When you are starving, proteins can also be broken down into___________
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9. When you start running, the muscle ceils bum off the ATP they have floating around in___________
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10. Aerobic respiration would occur in___________
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Part III Listening Comprehension (35 minutes)
Section A
Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked [A], [B] [C] and [D], and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
注意:此部分试题请在答题卡2上作答。
11.
B :Luck
C :Work
D :An accident
12.
B :She agrees with the man
C :The light isn't bright enough
D :The dining hall isn't large enough
13.
B :One hour by train
C :One hour by bus
D :One hour by car
14.
B :Canadian
C :Australian
D :Austrian
15.
B :On the fight
C :On the left
D :Over there
16.
B :Mrs. Peterson's
C :Peter's
D :Mr. Peterson's
17.
B :Schoolmates
C :Roommates
D :Workmates
18.
B :Because she didn't hear the telephone ring
C :Because she was washing her hair
D :Because she didn't want to answer
Questions 19 to 22 are based on the conversation you have just heard.
19.
B :She is trying to sell it
C :She bought it from a friend
D :It has broken down before
20.
B :It's rather small
C :It probably won't cost a lot to repair
D :It's probably difficult to drive
21.
B :He has fixed her car before
C :He is one of her neighbors
D :He will probably overcharge her
22.
B :Test-drive the woman's car
C :Help the woman pay the mechanic's bill
D :Help the woman fix her car
Questions 23 to 25 are based on the conversation you have just heard.
23.
B :Methods for building powerful new telescopes
C :A technical problem that astronomers can't solve
D :The discovery of planets orbiting distant stars
24.
B :They were able to see the planets with a telescope
C :They compared the parent stars to the Sun
D :They sent astronauts on a mission into space
25.
B :Their chemical composition
C :Their temperature
D :Their age
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked [A], I B ], I C ] and ~ D ]. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
注意:此部分试题请在答题卡2上作答。
Passage One
Questions 26 to 28 are based on the passage you have just heard.
26.
B :She drinks extra tea
C :She eats a lot of things
D :She sleeps a great deal
27.
B :Problems with family members or friends
C :Problems with class work
D :Problems with a part-time job
28.
B :Drinking some diet coke
C :Playing a video game
D :Drinking extra tea
Passage Two
Questions 29 to 31 are based on the passage you have just heard.
29.
B :They were able to stay up in the air for half an hour and more in the machine
C :They were able to carry travelers
D :They were able to fly in around Dayton
30.
B :A lot
C :Hardly anything
D :A little
31.
B :The Government didn't give the Wrights any money
C :The Government thought the Wrights wanted money in order to build an airplane
D :At the time it seemed no one could understand them
Passage Three
Questions 32 to 35 are based on the passage you have just heard.
32.
B :The writer doesn't like money at all
C :Bill Gates does not know how to enjoy himself
D :Mental well-being is the most important thing
33.
B :Sports life
C :Spiritual life
D :Working life
34.
B :It is very noisy
C :It is very insecure
D :It is very unfriendly
35.
B :The Best Things Money Cannot Buy
C :Taking Good Care of Oneself
D :How to Enjoy Life Thoroughly
Section C
Directions: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blanks, you can either use the exact words you have just heard or write down the main points in your own words. Finally, when the passage is read for the third time, you should check what you have written.
注意:此部分试题在答题卡2上;请在答题卡2上作答。
Part III Section C
A new book is sure to be discussed, and (36) , at colleges this fall. The book is called My Freshman Year: What a Professor Learned by Becoming a Student. The writer is Rebekah Nathan. That is not her real name. She is in her fifties. She is a professor of (37) __ at a university in the United States. Her name for it is "Any U".
The professor wanted to know why many of her students did not ( 38 ) __ their work or ask for help, She decided to do a (39) __ project. She got the (40) __ of the university ethics (41) __. Such groups consider moral and legal issues in studies.
In the spring of 2002, she (42) __ to her own university under the name "Rebekah Nathan" and was admitted. She lived in student housing. She took five classes during her first term and two in the second (43) . She did pretty well,
although she got one C, a mark of average. She also played sports.
(44)
(45)They are busy with activities and jobs. They try to learn only as much as they have to. But she says they will read the material if it is directly linked to what is being discussed in class.
(46) .She gives less reading now. She asks questions designed to get students to speak more. She offers help. And she says she is no longer offended if a student falls asleep.
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Part IV Reading Comprehension (Reading in Depth) (25 minutes)
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 bank isidentified 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.
Questions 47 to 56 are based on the following passage.
Once again, science supports what your grandmother told you: A good night's sleep helps your body fight a cold.
People who 47 fewer than seven hours of sleep per night in the weeks before being 48 to the Cold virus were nearly three times as likely to get sick as those who averaged eight hours or more, a new study found.
Researchers used frequent telephone 49 to track the sleep habits of more than 150 men and women aged 21 to 55 over the course of a few weeks. Then they exposed the 50 to the virus, quarantined ( ~ ) them for five days and kept track of who got sick.
51 sleeping more, sleeping better also seemed to help the body fight illness: Patients who fared better on a measure known as "sleep efficiency"--the percentage of time in bed that you're 52 sleeping--were also less likely to get sick.
The results held true even after researchers adjusted for 53 such as body-mass index, age, sex, smoking and pre- existing antibodies to the virus.
, Like your grandmother, the researchers aren't exactly sure why sleeping better makes you less likely to develop a cold.
But they do take a stab at the answer: "Sleep 54 influences the regulation ofproinflammatory cytokines, histamines, and other symptom mediators that are released in 55 to infection." In plain English, maybe tossing and turning when you're infected with the cold virus ___56_. to the symptoms that define a cold.
注意:此部分试题请在答题卡2上作答。
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Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked [A], [B], [C]and [D]. You should decide on the best choice and mark the
corresponding letter on Answer Sheet 2 with a single line through the center.
Passage One
Questions 57 to 61 are based on the following passage.
One of America's greatest exports to the rest of the world has been entertainment. America, a nation of incredible energy and talent, has flooded the world markets with her films, theaters and songs. In America the two centers where this talent is most brilliantly and successfully essayed are Hollywood and Broadway.
Hollywood is a district within the city of Los Angeles. Its name is synonymous with the motion-picture industry. Since the early 1900s, when movie makers found southern California an ideal blend of mild climate and varied geography, it has become
the home for cinematic dreams. All the great names of cinema have passed through Hollywood on the road to international careers.
Today it still remains the place where dreams are Said to come true and fantasies are carefully nurtured. Known as "The Movie Capital of the World", Hollywood is one of the few places where epic films can still be made on such a large scale.
Ancient Rome, the Pharaoh's Egypt or a science fiction film staged somewhere in the Galaxy are all within the imagination of the filmmakers and the industry they control. It is a place where unknowns are discovered and even actors from abroad have come to Hollywood to further establish their fame and recognition.
With the coming of television Hollywood began to alter its function. By the early 1960s it had become the source of the majority of U.S. network television entertainment. But, its place as the center of the movie industry in America has remained undiminished and unchallenged,
On the east coast of America, however, in New York it is live theater which provides the source of culture and entertainment. Here it is the dramatic stage which dominates the cultural scene. The main avenue which runs through the city is known as Broadway. It traverses the length of Manhattan and near the middle clustered the many theaters that have long made it the foremost showcase of commercial stage entertainment in the United States. The term Broadway was at one time virtually
sYnonymous with American theater activity. In the 1980s the street became known as "The Great White Way" because of its brilliant display of lights in the evening. As the power and prosperity of New York City grew in the world, so did the number,
size and magnificence of the Broadway theaters. Broadway soared into its peak in the mid 1920s. At this time there were over eighty theaters on Broadway but in recent years the number has declined. Yet, it still remain vibrantly active and under constant renewal.
注意:此部分试题请在答题卡2上作答。
57. The main topic of the passage is __
B :films
C :theaters
D :Hollywood and Broadway
58. American people made Hollywood the center of the movie industry for its __
B :talented citizens
C :mild climate and varied geography
D :wealth
59. Which of the following is true about Hollywood?
B :It's the dreamland of young people
C :It's controlled by American filmmakers
D :It's named after a famous actor
60. The word "dominate" (Line 2, Para. 5 ) is closest in meaning to __
B :control
C :lead
D :hold
61. According to the passage, nowadays Broadway
B :is in its peak
C :is in the need of changes
D :is still the center of American theater activity
Passage Two
Questions 62 to 66 are based on the following passage.
Many of us still tend to regard emotions as interfering with rational thought, and sometimes landing us in trouble. But in recent years psychologists have taken quite a different view. Keith Oatley, Professor of psychology at Glasgow University, is involved in the research which shows the fundamental importance of emotions. He believes we are very ambivalent about them: we think of our emotions as being irrational, but we also consider them as essential to being human.
For example, Mr. Spock, a character in the television series Startrek is super-intelligent, and he has no emotions at all!
However, he is never made captain of the spaceship. Maybe, this is because Mr. Spock is not the kind of person you can identify with a person who shows his emotions. As Professor Oatley points out, our emotions have very important functions,
for example, fear. If we cross the road and a car approaches, we usually freeze or step back. We stop what we were doing, check what we have done, and pay very careful attention to the environment, The emotion of fear calls into readiness this small repertoire(~/~ ) of actions which, on average, helps preserve our safety.
On the other hand, if things are going well and small problems come up, we find we can solve them with the resources we have to hand. As a consequence, we tend to feel happy and usually continue doing the job. Anger is an emotion that tends to occur when someone is preventing us from doing something. Then this small "kit" of reactions enables us to prepare ourselves to be quite aggressive to that person, or to try harder, and so on. Professor Oatley believes emotions generally occur at these junctures in actions. With fear and anger our emotions prompt us to start doing something else, whereas with happiness they "suggest" we continue what we are already doing.
注意:此部分试题请在答题卡2上作答。
62. The author thinks that
B :emotions help us
C :emotions interfere with rational thought
D :emotions get us into trouble
63. Which of the following is TRUE of Mr. Spock, a character in Startrek?
B :He is short of intelligence
C :He does not get along with his crew
D :He is a person who shows his emotions
64. Which of the following is NOT mentioned in the passage?
B :Happiness inspires us to continue what we are doing
C :Anger may stimulate us to make greater efforts
D :Anger tends to do us mole harm than good
65. It Can be inferred from the passage that __
B :emotions play a more important part than we realize
C :positive emotions such as love and joy are good for us
D :negative emotions such as hate and sadness prevent us from rational thinking
66. By "we are very ambivalent about them" (Lines 3~4, Para. 1 ) it is meant that __
B :we have similar ideas of emotions
C :we are quite clear about emotions
D :we can do nothing about emotions
Part V Cloze (15 minutes )
Directions: There are 20 blanks in the following passage. For each blank there are four choices marked [ A ], [B ], [C ] and [ D] on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
注意:此部分试题请在答题卡2上作答。
Children model themselves largely on their parents.
They do so mainly through identification. Children identify 67 a parent when they believe they have the qualities and feelings that are 68 of that parent. The things parents do and say and the 69 they do and say to them therefore strongly influence a child's 70 . However, parents must consistently behave like the type of 71 they want their child to become.
A parent's actions 72 affect the self-image that a child forms 73 identification. Children who see mainly positive qualities in their 74 will likely learn to see themselves in a positive way. Children who observe chiefly 75 qualities in their parents will have difficulty 76 positive qualities in themselves. Children may 77 their self-image, however, as they become increasingly 78 by peers groups' standards before they grow up.
Isolated events, 79 dramatic ones, do not necessarily have a permanent 80 on a child's behavior. Children interpret such events according to their established attitudes and previous training. Children who know they are loved can, for 81 , accept the divorce of their parents' or a parent's early 82 . But if children feel unloved, they may interpret such events __8_3 a sign of rejection or punishment.
In the same way, all children are not influenced 84 by toys and games, reading matter, and television programs. 85 in the case of a dramatic change in family relations, the effect of an activity or experience depends on how the child 86 it.
67.
B :with
C :around
D :for
68,
B :characteristic
C :conceived
D :indicative
69.
B :expression
C :way
D :extent
70.
B :words
C :mood
D :reactions
71.
B :human
C :creature
D :adult
72.
B :nevertheless
C :also
D :however
73.
B :besides
C :with
D :through
74.
B :parents
C :peers
D :behaviors
75.
B :cheerful
C :various
D :complex
76.
B :seeing
C :saw
D :seen
77.
B :copy
C :giveup
D :continue
78.
B :influeneced
C :given
D :depended
79.
B :besides
C :even
D :finally
80.
B :wonder
C :stamp
D :effect
81.
B :example
C :truth
D :fact
82.
B :reward
C :advice
D :teaching
83.
B :being
C :of
D :for
84.
B :ever
C :alike
D :also
85.
B :Alas
C :Right
D :As
86.
B :interprets
C :clarifies
D :translates
Part VI Translation (5 minutes)
Directions: Complete the sentences on Answer Sheet 2 by translating into English the Chinese given in brackets.
注意:此部分试题在答题卡2上;请在答题卡2上作答。
Part VI Translation (5 minutes)
87.Only after three years__________________(我就看到家乡发生了巨大变化).
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88.Every boy and girl in this community__________________ (现在意识到了吸烟的严重危害).
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89.We look forward to__________________ (被邀请参加他的婚礼).
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90.The gid decided to drop out of the school__________________ (尽管她父母强烈反对).
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9 1.The proposal__________________ (在那个村子铺一条路)is to be discussed at the meeting.
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