文档文本内容
LESSON55
Section 1:
•
Recent developments in astronomy have made it possible to detect planets in
our own Milky Way and in other galaxies. This is a major achievement
y
y
g
j
because，in relative terms，planets are very small and old not emit light.
Finding planets is proving hard enough，but finding life on them will prove
infinitely more difficult. The first question to answer is whether a planet can
actually support life. In our own solar system，for example，Venus is far
too hot and Mars is far too cold to support life Only the Earth provides
too hot and Mars is far too cold to support life. Only the Earth provides
ideal conditions，and even here it has taken more than four billion years
for plant and animal life to evolve
for plant and animal life to evolve
•
Recent developments in astronomy have made it possible to detect
planets in our won Milky Way and in other galaxies.
p
y
y
g
•
She made it clear that she didn’t want to leave
She made it clear that she didn t want to leave
•
This is a major achievement because，in relative terms，planets are very
small and old not emit light. Finding planets is proving hard enough，but
finding life on them will prove infinitely more difficult The first question
finding life on them will prove infinitely more difficult. The first question
to answer is whether a planet can actually support life. In our own solar
system，for example，Venus is far too hot and Mars is far too cold to
syste
，o e a
p e，Ve us s a too
ot a d
a s s a too co d to
support life. Only the Earth provides ideal conditions，and even here it
has taken more than four billion years for plant and animal life to evolve
•
In relative terms
•
相对而言
相对而言
•
Students have less money in relative terms, but spend more on books.
•
In relative terms Japan is a big country
•
In relative terms, Japan is a big country
•
This is a major achievement because，in relative terms，planets
are very small and old not emit light
are very small and old not emit light
1
•
This is a major achievement because，in relative terms，planets are very
small and old not emit light. Finding planets is proving hard enough，but
g
g
g
g
finding life on them will prove infinitely more difficult. The first question to
answer is whether a planet can actually support life. In our own solar
f
l
V
i f
h
d M
i f
ld
system，for example，Venus is far too hot and Mars is far too cold to
support life. Only the Earth provides ideal conditions，and even here it has
taken more than four billion years for plant and animal life to evolve
taken more than four billion years for plant and animal life to evolve
•
finite
•
有限制的; 有限度的:
有限制的; 有限度的:
•
Human knowledge is finite.
•
地球有限的资源
•
the earth's finite resources
•
infinite
限的
•
无限的
•
宇宙是无尽的
•
This is a major achievement because，in relative terms，planets are
very small and old not emit light. Finding planets is proving hard enough，
g
g
g
g
but finding life on them will prove infinitely more difficult. The first
question to answer is whether a planet can actually support life. In our
l
f
l
V
i f
h
d M
i f
own solar system，for example，Venus is far too hot and Mars is far
too cold to support life. Only the Earth provides ideal conditions，and
even here it has taken more than four billion years for plant and animal
even here it has taken more than four billion years for plant and animal
life to evolve
Section 2:
•
Whether a planet can support life depends on the size and brightness of
its star，that is its ‘sun’. Imagine a star up to twenty times larger，
，
g
p
y
g
，
brighter and hotter than our own sun. A planet would have to be a very
long way from it to be capable of supporting life. Alternatively，if the
star were small，the life-supporting planet would have to have a close
orbit round it and also provide the perfect conditions for life forms to
develop But how would we find such a planet？At present
there is no
develop. But how would we find such a planet？At present，there is no
telescope in existence that is capable of detecting the presence of life. The
development of such a telescope will be one of the great astronomical
development of such a telescope will be one of the great astronomical
projects of the twenty-first century.
•
重点常用词组
•
Be capable of doing
Be capable of doing
•
Lewis is capable of running the 100 metres in under 9.9 seconds.
•
be perfectly capable of doing sth
be perfectly capable of doing sth
•
Leave the boy alone, I'm sure he's perfectly capable of solving the
problem
problem
•
我完全能照顾我自己
•
我们完全能用一个月背下3000个单词
我们完全能用
个月背下3000个单词
2
•
Whether a planet can support life depends on the size and brightness of
its star，that is its ‘sun’. Imagine a star up to twenty times larger，
g
g
brighter and hotter than our own sun. A planet would have to be a very
long way from it to be capable of supporting life. Alternatively，if the
ll
h lif
i
l
ld h
h
l
star were small，the life-supporting planet would have to have a close
orbit round it and also provide the perfect conditions for life forms to
develop But how would we find such a planet？At present
there is no
develop. But how would we find such a planet？At present，there is no
telescope in existence that is capable of detecting the presence of life. The
development of such a telescope will be one of the great astronomical
p
p
g
projects of the twenty-first century.
•
a telescope (=for seeing a long way)
•
telecommunications (=communicating with people a long way away)
telecommunications (=communicating with people a long way away)
•
Teleshopping
•
电报
•
电报
•
Whether a planet can support life depends on the size and brightness of
it
t
th t i it '
' I
i
t
t t
t ti
l
its star，that is its 'sun'. Imagine a star up to twenty times larger，
brighter，brighter and hotter than our own sun. A planet would have to
be a very long way from it to be capable of supporting life. Alternatively
be a very long way from it to be capable of supporting life. Alternatively，
if the star were small，the life-supporting planet would have to have a
close orbit round it and also provide the perfect conditions for life forms
p
p
to develop. But how would we find such a planet？At present，there is
no telescope in existence that is capable of detecting the presence of life.
Th d
l
f
h
l
ill b
f h
The development of such a telescope will be one of the great
astronomical projects of the twenty-first century.
Section 3:
•
It is impossible to look for life on another planet using earth-based
telescopes. Our own warm atmosphere and the heat generated by the
i i
i
j
telescope would make it impossible to detect objects as small as planets.
Even a telescope in orbit round the earth，like the very successful
Hubble telescope
would not be suitable because of the dust particles in
Hubble telescope，would not be suitable because of the dust particles in
our solar system. A telescope would have to be as far away as the planet
Jupiter to look for life in outer space，because the dust becomes thinner
p
p
，
the further we travel towards the outer edges of our own solar system.
Once we detected a planet，we would have to find a way of blotting out
the light from its star，so that we would be able to 'see' the planet
properly and analyze its atmosphere. In the first instance，we would be
looking for plant life
rather than 'little green men'
looking for plant life，rather than little green men .
•
Generate (v) 产生
•
产生(热
电)
•
产生(热﹑电)
•
hatred generated by racial prejudice
ti
t
•
generating sentences
•
产生利润
产生大量工作
•
产生大量工作
•
Generation
3
•
It is impossible to look for life on another planet using earth-based
telescopes. Our own warm atmosphere and the heat generated by the
telescopes. Our own warm atmosphere and the heat generated by the
telescope would make it impossible to detect objects as small as planets.
Even a telescope in orbit round the earth，like the very successful
Hubble telescope，would not be suitable because of the dust particles in
our solar system. A telescope would have to be as far away as the planet
J
it
t l
k f
lif i
t
b
th d
t b
thi
Jupiter to look for life in outer space，because the dust becomes thinner
the further we travel towards the outer edges of our own solar system.
Once we detected a planet
we would have to find a way of blotting out
Once we detected a planet，we would have to find a way of blotting out
the light from its star，so that we would be able to 'see' the planet
properly and analyze its atmosphere. In the first instance，we would be
p
p
y
y
p
，
looking for plant life，rather than 'little green men'.
•
Particle
•
We can see the dust particles floating in the sunlight clearly.
•
Dust particle
Dust particle
•
It is impossible to look for life on another planet using earth-based
p
p
g
telescopes. Our own warm atmosphere and the heat generated by the
telescope would make it impossible to detect objects as small as
planets. Even a telescope in orbit round the earth，like the very
successful Hubble telescope，would not be suitable because of the
dust particles in our solar system A telescope would have to be as far
dust particles in our solar system. A telescope would have to be as far
away as the planet Jupiter to look for life in outer space，because
the dust becomes thinner the further we travel towards the outer
the dust becomes thinner the further we travel towards the outer
edges of our own solar system. Once we detected a planet，we
would have to find a way of blotting out the light from its star，so
that we would be able to 'see' the planet properly and analyze its
atmosphere. In the first instance，we would be looking for plant life，
th
th
'littl
'
rather than 'little green men'.
•
Blot
•
（墨水等的）污点或污迹:
（
等
）
或
•
a page covered in (ink) blots 染有墨迹的一页.
•
Ink blots
Ink blots
•
a blot on one’s reputation
•
(v)blot sth out （用墨点）覆盖或遮住（字迹等）:
•
Several words in the letter had been blotted out..
•
（尤指雾等）完全遮住（某物）:
•
Thick cloud blotted out the view. 云层把风景遮住了.
•
雾霾（haze)把大楼遮住了
•
Once we detected a planet，we would have to find a way of blotting out the
p
，
y
g
light from its star，so that we would be able to 'see' the planet properly
and analyze its atmosphere.
4
•
It is impossible to look for life on another planet using earth-based
telescopes. Our own warm atmosphere and the heat generated by the
telescopes. Our own warm atmosphere and the heat generated by the
telescope would make it impossible to detect objects as small as planets.
Even a telescope in orbit round the earth，like the very successful Hubble
telescope，would not be suitable because of the dust particles in our solar
system. A telescope would have to be as far away as the planet Jupiter to
l
k f
lif i
t
b
th d
t b
thi
th f
th
look for life in outer space，because the dust becomes thinner the further
we travel towards the outer edges of our own solar system. Once we
detected a planet
we would have to find a way of blotting out the light
detected a planet，we would have to find a way of blotting out the light
from its star，so that we would be able to 'see' the planet properly and
analyze its atmosphere. In the first instance，we would be looking for
y
p
，
g
plant life，rather than 'little green men'.
•
When the rain started, the crowd vanished in an instant
•
Instance
•
Instance
•
in the first instance (fml 文) 首先; 第一步:
I
th fi
t i
t
I
t d t
f
b t th
I
id
d
•
In the first instance I wanted to refuse, but then I reconsidered.
•
In the first instance, notify the police and then contact your insurance
company
company.
•
little green men
g
•
The life forms most likely to develop on a planet would be bacteria. It is
bacteria that have generated the oxygen we breathe on earth. For most of
g
yg
the earth's history they have been the only form of life on our planet. As
Earth-dwellers，we always cherish the hope that we will be visited by
little green men and that we will be able to communicate with them. But
this hope is always in the realms of science fiction. If we were able to
discover lowly forms of life like bacteria on another planet
it would
discover lowly forms of life like bacteria on another planet，it would
completely change our view of ourselves. As Daniel Goldin of NASA
observed，'Finding life elsewhere would change everything. No human
observed，Finding life elsewhere would change everything. No human
endeavor or thought would be unchanged by it."
•
The life forms most likely to develop on a planet would be bacteria. It is
bacteria that have generated the oxygen we breathe on earth. For most of
g
yg
the earth's history they have been the only form of life on our planet. As
Earth-dwellers，we always cherish the hope that we will be visited by
little green men and that we will be able to communicate with them. But
this hope is always in the realms of science fiction. If we were able to
discover lowly forms of life like bacteria on another planet
it would
discover lowly forms of life like bacteria on another planet，it would
completely change our view of ourselves. As Daniel Goldin of NASA
observed，'Finding life elsewhere would change everything. No human
observed，Finding life elsewhere would change everything. No human
endeavor or thought would be unchanged by it."
5
•
怀有（某种感情或想法）;
•
cherish the hope of winning an Olympic medal 盼望获奥林匹克奖牌
cherish the hope of winning an Olympic medal 盼望获奥林匹克奖牌
*
•
He cherishes the illusion that she's in love with him.
He cherishes the illusion that she s in love with him.
•
心怀一种梦想
•
The life forms most likely to develop on a planet would be bacteria. It is
bacteria that have generated the oxygen we breathe on earth. For most of
bacteria that have generated the oxygen we breathe on earth. For most of
the earth's history they have been the only form of life on our planet. As
Earth-dwellers，we always cherish the hope that we will be visited by
little green men and that we will be able to communicate with them. But
this hope is always in the realms of science fiction. If we were able to
di
l
l f
f lif lik b
t
i
th
l
t
it
ld
discover lowly forms of life like bacteria on another planet，it would
completely change our view of ourselves. As Daniel Goldin of NASA
observed
'Finding life elsewhere would change everything No human
observed，Finding life elsewhere would change everything. No human
endeavor or thought would be unchanged by it."
•
Realm
•
1)王国:
•
2)(比喻）领域
•
in the realm of literature
in the realm of literature
•
在想象的世界里
•
In the realm of the imagination
•
In the realm of the imagination
•
精神领域
•
The spiritual realm
•
The spiritual realm
•
政治领域
Hi i t
t
i
th
l
f
liti
•
His interests are in the realm of politics
•
The life forms most likely to develop on a planet would be bacteria.
y
p
p
It is bacteria that have generated the oxygen we breathe on earth.
For most of the earth's history they have been the only form of life
on our planet. As Earth-dwellers，we always cherish the hope that
we will be visited by little green men and that we will be able to
communicate with them But this hope is always in the realms of
communicate with them. But this hope is always in the realms of
science fiction. If we were able to discover lowly forms of life like
bacteria on another planet，it would completely change our view of
b c e
o
o
e p
e ，
wou d co
p e e y c
ge ou v ew o
ourselves. As Daniel Goldin of NASA observed，'Finding life
elsewhere would change everything. No human endeavor or thought
would be unchanged by it."
6
