Unit

1 Great

scientists1Listen

to

Part

1.A

GREAT

CHINESE

SCIENTISTFather

of

the

Chinese

spaceprogrammeYu

Ping

(YP)

is

talking

to

herfriendSteve

Smith

(SS)

about

QianXuesenand

his

work

as

a

rocket

scientist.2SteveSmith

(SS)

about

Qian

Xuesen

andhiswork

as

a

.A

GREAT

CHINESE

SCIENTISTFather

of

the

Chinese

spaceprogrammeYu

Ping

(YP)

is

talking

to

herfriendrocket

scientistListen

again

and

fill

in

theblanks.3YP:

What

do

you

want

to

be

when

you

grow

up

,Steve?SS:

I

want

to

be

an

astronomer

andvisitstars.

I

wish

to

visit

Mars

one

day.YP:

I

think

I’d

like

to

work

in

thespaceindustry

too.

I'd

like

to

be

a

rocket

scientist

like

QianXuesen.SS:

What

did

he

have

to

do

to

become

arocket

scientist?4YP:

Well,

he

first

studied

autniversity

tobe

an

engineer.

Later

hdeocwtoern’st

todAemgreereica

to

study

for

his.

It

was

then

he

began

towork

luckyon

rockets.SS:

So

it

was for

ourspaceprogramme

that

he

came

back

to5space

rocinksettitsuitne

China

before

hebegan

his to

design

andbuild

rockets

to

go

into

space.YP:

Very

much

so.

There

was

no

woorkn6Listen

to

Part

2.7Part

2SS:

Do

you

think

he

wanted

to

travelinto

space

in

one

of

his

rockets?YP:

I

have

no

idea

but

I

believe

helooked

forward

to

the

firstspaceflight

by

a

Chinese

astronaut.Listen

again

and

fill

in

theblanks.8beQianSS:

Yes.

Now

that

China

hassent

satellitesinto

space.

I

hope

we’llfirstthe to

land

on

Mars.

Thatwouldreally

bepsicotmureething

special

and

if

Iwere

that

astardomnairuet

I

would

put9SS:

See

you.YP:

Indeed.

He

is

rightly

called

thefather

of

the

Chinese

space

programme.He

is

my

hero

and

he

is

why

I

want

tobe

a

rocket

scientist.SS:

Well,

we’d

better

get

on

with

ourhomework.

We

need

good

grades

to

get

intouniversity.YP:

Right

you

are.

See

you,

then.10NAMING

A

FLOWERRobert

Briggs(RB)

is

talking

toZhangWei

(ZW)

about

a

new

kind

of

lily

hehas

found.11NAMING

A

FLOWERRobert

Briggs(RB)

is

talking

toZhangWei

(ZW)

about

a

new

kind

ofhehas

found.Listen

again

and

fill

in

theblanks.lily12ZW:

Hello

Robert.

What’s

that

bookyou’re

carrying

?RB:

A

book

that

helps

you

identify

aflower.ZW:

I

see.

Why

do

you

wantthat?RB:

I’ve

found

this

lily.

It

looks

different

to

me.

So

I

want

to

find

out

ifit’snew

or

not.

Our

biology

teacher

toldme

thatifit’s

already

known,

I’dfind

it

in

thisbook.13name?ZW:

Wow!

So

you

think

you

mayhavefound

a

new

lily?RB:

I

hope

so,

but

I

have

to

do

someresearch

first

to

find

out

forsure.ZW:

What

happens

if

it’s

in

thebook?RB:

It

means

that

somebody

else

hasfound

it

and

named

it.

Then

I’llknow

its

biological

name.ZW:

What

do

youmean

by

the

biological14Rose

Autumn

Sunset.RB:

Actually

like

us

a

flower

has

two

names.

The

first

is

the

group

offlowers

it

belongs

to

–

like

a

familyname.

A

rose

is

one

such

group.

Thesecond

is

the

kind

of

flower

–

like

agiven

name.

It

may

describewhatthe

rose

looks

like;

for

example,

thecolour

of

an

autumn

sunset

.

Togetheryou

get

the

flower’s

name,

which

is15ZW:

So

long

ago!RB:

Yes,

and

he

solved

a

very

serious

problem

for

biology.ZW:

What

wasthat?ZW:

Gosh!Who

made

that

system

?RB:

A

great

scientist

called

CarlLinnaeus.

He

lived

in

Swedenfrom

1707

to

1778.16it

is.

If

my

flower

isn’t

inthis

book,

I’ll

know

that

I’vefounda

new

kind

oflily.RB:

Before

himnobody

could

tell

if

aplant

was

new,

as

there

was

noway

ofchecking

.

There’re

somany

plants,

you

see!ZW:

Yes,

I

appreciate

that!

So

hissystem

is

still

used?RB:

Indeed17RB:

Yes,

and

if

I’m

lucky

…(fading

out)ZW:

That’s

great!

Can

I

come

andhelp

you?

This

research

sounds

fun.18Listen

to

Part

1.A

MATHEMATICIAN'S

PROBLEMJohn

Smith

(JS)

is

talking

to

ZhaoYang(ZY)

about

a

mathematician

whointerests

him.19Listen

again

and

fill

in

theblanks.A

MATHEMATICIAN'S

PROBLEMJohn

Smith

(JS)

is

talking

to

ZhaoYang(iZnYte)raesbtos

ut

a

mathematicianwhohim.20JS:

Do

you

know

that

we’ve

beenstudying

Euler

in

maths

?ZY:

Who

is

he?

I’ve

never

heard

ofhim.JS:

Well,

he

was

a

famousmathematician

in

the

eighteenth

century.

He

revised

all

the

pure

mathematics

that

was

known

inhis

day.21ZY:

That

probably

wasn’t

verymuch.JS: You’re

wrong

there.

He

wrote

more

than

anyothermathematician

before

or

since.22ZY:

Really!

Well,

what

did

he

do?JS: He

introduced

a

lot

of

symbols

intomathematics

such

as

piandtheterms

sin

and

cosin.ZY:

Wow!JS: And

he

did

half

of

this

workwhen

he

was

blind

.ZY:

How

did

he

dothat?JS:

He

told

his

ideas

to

someoneelse

who

wrote

them

down.23Listen

to

Part

2.24is

agoodexample.Listen

again

andfill

in

theblanks.Part

2ZY:

What

were

his

achievements

?JS: He

introduced

a

new

branch

ofmathematics

called

topology.It

helps

you

understand

things

byusing

diagrams.

The

subway

map25butit

shows

how

stationsZY:

How

did

he