大学英语视听说4全部答案

Unit1

Hello,

everyone.

Today

I

invite

you

to

join

me

in

an

exploration

off

the

causes

of

depression.

There

ate

many

factors

involved,

but

I

believe

some

deserve

special

attention.

Heredity certainly plays a role. .The tendency to develop depression may be inherited;

there is evidence that this disorder may run in families.

Physiology

is

another

factor

related

to

depression.

There

may

be

changes

or

imbalances

in

chemicals

which

transmit

information

in

the

brain

called

neurotransmitters.

Many

modern

antidepressant

drugs

attempt

to

increase

levels

of

certain

neurotransmitters

so

as

to

increase

brain

communication.

While

the

causal

relationship

is

unclear;

it

is known

that antidepressant

medications do reliever certain

symptoms of depression.

Researchers also study psychological

factors.

They

include the complex development

of

one

’

s

personality

and

how

one

has

learned

to

cope

with

external

environmental

factors, such as stress. It is freeqently observed that low self-esteem and self-defeating

thinking

are

connected

with

depression.

While

it

is

not

clear

which

is

the

cause

and

which is the effect, it is known that sufferers who are able to make corrections to their

thinking patterns can show improved mood and self-esteem.

Another factor causing depression is one

’

s early experiences. Events such as the death

of

a

parent,

the

divorce

of

the

parents,

neglect,

chronic

illness,

and

severe

physical

abuse can also increase the likelihood of depression later in life.

Some present experiences

may also

lead to depression. Job

loss,

financial difficulties,

long periods of

unemployment, the

loss of a spouse or other

family

member, or other

painful events

may trigger depression.

Long-term stress at

home, work, or school can

also be involved.

It

is

worth

nothing

that

those

living

with

someone

suffering

from

depression

experience

increased

anxiety

which

adds

to

the

possibility

of

their

also

becoming

depressed.

Unit2

Greetings,

ladies

and

gentlemen.

I

hope

you

’

ll

find

it

interesting

how

to

be

fashionable without spending too much money

.

Sure,

some

famous

stars

always

look

stylish.

They

have

unlimited

clothing

budgets

that

put

the

latest

looks

at

their

fingertips!

But

you

can

also

look

amazing

without

spending

lots of

money on

your

wardrobes. Simple

try

the

following suggestions on

for size.

First,

you

should

make

seasonal

purchases;

that

is,

you

should

buy

winter

coats,

leather

jackets,

bathing

suits,

ad

summer

dress

at

the

end

of

the

season.

Y

ou

’

ll

get

major discounts as you stock up for the next year.

If you want clothes to wear right now, you can go to discount stores. They may not be

the place to buy an expensive evening dress, but they

’

re perfect for buying things like

T-shirts

There is yet another cheap way of you to buy stylish clothes. Many department stores

have

a

store

brand.

It

means

they

offer

current

styles

but

are

much

cheaper

than

big-name brands.

To save

money

, an

important principle

for

you to

follow

is

to not buy

“

outfi ts

”

. With

the exception of suits,

interchangeable piece are

more affordable

—

buying clothing

in

separate.

Wear-with-

anything

pieces

are

always

a

good

buy

.

For

example,

you

can

almost

always

wear

a

pair

of

black

trousers

and

a

white

dress

skirt;

you

can

wear

them

several times a week, paired with different accessories.

If

you

can

’

t

afford

expensive

clothes,

you

can

spend

money

on

accessories

such

as

nice

shoes

and

fashionable

bags.

Such

extras

make

even

the

simplest

outfit

look

polished.

Finally,

a

great

haircut

always

helps.

When

you

hair

looks

fabulous,

you

look

more

stylish and fashionable.

Unit3

A

natural

disaster

is

the

consequence

of

a

hazardous

event,

occurring

when

human

activities are affected by adverse natural phenomena such as flood, drought, hailstorm,

heat

wave,

forest

fore,

hurricanes

or

typhoons,

tornado,

tsunami,

landsides

and

mudslides, or

volcanic eruption.

The resulting deaths or property damages depend on

the human ability to resist the disasters.

Sometimes

two

seemingly

different

disasters

may

be

related

to

each

other.

For

example,

an

undersea

earthquake

may

result

in

a

tsunami.

While

there

is

a

long

dry

spell

in

one

area,

there

may

be

a

great

flood

in

another.

It

is

necessary

for

human

beings to understand and combat natural disasters.

A

drought

is

a

long-lasting

weather

pattern

consisting

of

dry

conditions

with

very

little or no precipitation. During this period, food and water supplies can run low, and

other condition, such as

famine, can result.

Drought can

last

for several

years and are

particularly

damaging

in

areas

in

which

the

residents

depend

on

agriculture

for

survival.

A

flood

follows too

much rain or water

in a

location, and could be the result of

many

different conditions. Floods can be caused by

heavy rainfall

from a storm,

including

thunderstorms, rapid

melting of a

large amounts of snow, or

rivers which swell

from

too

much

precipitation

upstream,

causing

widespread

damage

to

areas

downstream.

Another possible cause of a flood is the bursting of man-made dams.

Unit4

Lillian:

Mr. Baxter, you

have worked

in the company for

five

years, and

you

manage

everything here smoothly

, like a clock. Could you tell us the secret of your successful

career?

Baxter:

Just as the golden rule of real estate is location, location, location, the golden

rule

of

work

is

relationships,

relationships,

relationships.

Unfortunately,

many

workers

focus so

hard on

the job at

hand

that they never develop

useful

relationships

with

people

in

other

parts

of

their

organization.

Worse,

when

they

do

interact

with

colleagues in other departments, they may not treat then with respect.

Lillian:

Could you give more details?