perhaps是什么意思2017年12月大学英语四级真题及答案(第三套)

2017

年

12

月大学英语四级真题及答案

(

第三套

)

Part I Writing (25 minutes)

Directions: For this part, you are allowed 30 minutes to write a short essay

onhow to best handle the relationshop between teachers and students.

You should write at least 120 words but no more than 180 words.

Part II Listening Comprehension (25 minutes)

Section A

Directions: In this section, you will hear three news reports. At the end of

each news report, you will hear two or three questions. Both the news report 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), B), C) and D). Then mark the

corresponding letter on Answer Sheet 1 with a single line through the centre.

Questions 1 and 2 are based on the news report you have just heard.

1. A) Her friend Erika. C) Her grandfather.

B) Her little brother. D) Her grandmother.

2. A) By taking pictures for passers- by. C) By selling lemonade and pictures.

B) By working part time at a hospital. D) By asking for help on social media.

Questions 3 and 4 are based on the news report you have just heard.

3. A) Finding cheaper ways of highway construction.

B) Generating electric power for passing vehicles.

C) Providing clean energy to five million people.

D) Testing the efficiency of the new solar panel.

4. A) They can stand the wear and tear of natural elements.

B) They can be laid right on top of existing highways.

C) They are only about half an inch thick.

D) They are made from cheap materials.

Questions 5 to 7 are based on the news report you have just heard.

5. A) Endless fighting in the region. C) Inadequate funding for research.

B) The hazards from the desert. D) The lack of clues about the species.

6. A) To observe the wildlife in the two national parks.

B) To identify the reasons for the lions

’

disappearance.

C) To study the habitat of lions in Sudan and Ethiopia.

D) To find evidence of the existence of the

“

lost lions

”

.

7. A) Lions walking. C) Some camping facilities.

B) Lions

’

tracks. D) Traps set by local hunters

Section B

Directions

：

In this section, you will hear two long conversations. At the end

of each conversation, you will hear four questions. Both the conversation 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), B), C), and D). Then mark the

corresponding letter on Answer Sheet 1 with a single line through the centre.

Questions 8 to 11 are based on the conversation you have just heard.

8. A) Her

‘

lucky birthday

’

. C) Her wedding anniversary.

B) A call from her dad. D) A special gift from the man.

9. A) Gave her a big model plane. C) Took her on a trip overseas.

B) Bought her a good necklace. D) Threw her a surprise party.

10. A) The gift her husband has bought.

B) The trip her husband has planned.

C) What has been troubling her husband.

D) What her husband and the man are up to.

11. A) He will be glad to be a guide for the couple

’

s holiday trip.

B) He will tell the women the secret if her husband agrees.

C) He is eager to learn how the couple

’

s holiday turns out.

D) He wants to find out about the couple

’

s holiday plan.

Questions 12 to 15 are based on the conversation you have just heard.

12. A) They are sensitive to the dynamics of a negotiation.

B) They see the importance of making compromises.

C) They know when to adopt a tough attitude.

D) They take the rival

’

s attitude into account.

13. A) They know how to adapt. C) They know when to make compromises.

B) They know when to stop. D) They know how to control their emotion.

14. A) They are patient. C) They learn quickly.

B) They are good at expression. D) They uphold their principles.

15. A) Make clear one's intentions. C) Formulate one's strategy.

B) Clarify items of negotiation. D) Get to know the other side.

Section C

Directions: In this section, you will hear three passages. At the end of each

passage, you will

hear

three

or

four

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), B), C), D). Then mark the corresponding letter on Answer

Sheet 1 with a single line through the centre.

Questions 16 to 18 are based on the passage you have just heard.

16. A) When America's earliest space program started.

B) When the International Space Station was built.

C) How many space shuttle missions there will be.

D) How space research benefits people on Earth.

17. A) They accurately calculated the speed of the orbiting shuttles.

B) They developed objects for astronauts to use in outer space.

C) They tried to meet astronauts' specific requirements.

D) They tried to make best use of the latest technology.

18. A) They are extremely accurate. C) They were first made in space.

B) They are expensive to make. D) They were invented in the 1970s.

Questions 19 to 21 are based on the passage you have just heard.

19. A) It was when her ancestors came to America.

B) People had plenty of land to cultivate then.

C) It marked the beginning of something new.

D) Everything was natural and genuine then.

20.

A)

They

believed

in

working

for

goals.

C)

They

had

all

kinds

of

entertainment.

B)

They

enjoyed

living

a

living

a

life

of

ease.

D)

They

were

known

to

be

creative.

21. A) Chatting with her ancestors. C) Polishing all the silver work.

B) Furnishing her country house. D) Doing needlework by the fire.

Questions 22 to 25 are based on the passage you have just heard.

22.

A)

Use

a

map

to

identify

your

location.

C)

Sit

down

and

try

to

calm

yourself.

B)

Call

your

family

or

friends

for

help.

D)

Try

to

follow

your

footprints

back.

23. A) You may find a way out without your knowing it.

B) You may expose yourself to unexpected dangers.

C) You may get drowned in a sudden flood.

D) You may end up entering a wonderland.

24. A) Look for food. C) Start a fire.

B) Wait patiently. D) Walk uphill.

25. A) Inform somebody of your plan. C) Check the local weather.

B) Prepare enough food and drink. D) Find a map and a compass.

Part

Ⅲ

Reading Comprehension ( 40 minutes )

Section C

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 2with a single line through the centre.

Passage One

Questions 46 and 50 are based on the following passage.

Aging happens to all of us, and is generally thought of as a natural part of

life. It would seem silly to call such a thing a

“

disease.

”

On the other hand, scientists are increasingly learning that aging and

biological age are two different things, and that the former is a key risk factor

for conditions such as heart disease, cancer and many more. In that light, aging

itself might be seen as something treatable, the way you would treat high blood

pressure or a vitamin deficiency.

Biophysicist

Alex

Zhavoronkov

believes

that

aging

should

be

considered

a

disease.

He

said

that

describing

aging

as

a

disease

creates

incentives

to

develop

treatments.

“

It unties the hands of the pharmaceutical(

制药的

)industry so that they can

begin treating the disease and not just the side effects,

”

he said.

“

Right

now,

people

think

of

aging

as

natural

and

something

you

can

’

t

control,

”

he

said.

“

IN

academic

circles,

people

take

aging

research

as

just

an

interest

area

where

they

can

try

to

develop

interventions.

The

medical

community

also

takes

aging

for

granted,

and

can

do

nothing

about

it

except

keep

people

within

a

certain

health

range.”

But if aging were recognized as a disease, he said,

“

It would attract funding

and change the way we do health care. What matters is understand that aging is

curable.

”

“

It was always known that the body accumulates damage,

”

he added.

“

The only

way

to

cure

aging

is

to

find

ways

to

repair

that

damage.

I

think

of

it

as

preventive

medicine for age-related conditions.

”

Leonard Hayflick, a professor at the University of California, San Francisco,

said the idea that aging can be cured implies the human lifespancan be increased,

which some researchers suggest is possible. Hayflick is not among them.

“

The re

’

re

many

people

who

recover

from

cancer,

stroke,

or

heart

disease.

But

they

continue

to

age,

because

aging

is

separate

from

their

disease,

”

Hayflick

said.

“

Even if those causes of death were eliminated, life expectancy would still not

go much beyond

92 years.”

46. Whatdo people generally believe about aging?

A) It should cause not alarm whatsoever.

B) They just cannot do anything about it.

C) It should be regardedas a kind of disease.

D) They can delay it with advances in science.

do many scientists view aging now?

A)

It might be prevented and treated. C) It

results from a vitamin deficiency.

B) It can be as risky as heart disease. D) It is an irreversible biological

process.

48. What does Alex Zhavoronkov think of

“

describing aging as a disease

”

?

A) It will prompt people to take aging more seriously.

B) It will greatly help reduce the side effects of aging.

C) It will free pharmacists from the conventional beliefs about aging.

D) It will motivate doctors and pharmacists to find ways to treat aging.

49. What do we learn about the medical community?

A) They now have a strong interest in research on aging.

B) They differ from the academic circles in their view on aging.

C) They can contribute to people

’

s health only to a limited extent.

D) They have ways to intervene in people

’

s aging process.

50. What does Professor Leonard Hayflick believe?

A) The human lifespan cannot be prolonged.

B) Aging is hardly separable from disease.

C) Few people can live up to the age of 92.