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高中英语选修
6
课文速背材料
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Unit 4 THE
EARTH IS BECOMING WARMER
—
BUT
DOES IT MATTER?
全球在变暖
——
这会带来什么影响吗？
1.
During the
20th century the temperature of the earth rose
最重要的就是二氧化碳。
8.
Dr
Janice
Foster
explains:
is
a
natural
phenomenon that scientists call the
'greenhouse effect'.
贾尼丝
·
福斯特博士解释说
:
有一种科学家称之为
‘
温
有一位名叫查尔斯
·
基林的科学家曾经把
1957-1997
年
期间大气层中二氧化碳
的含量作了精确的统计。
16.
He found that between these years the
carbon dioxide in
the atmosphere went
up from around 315 parts to around
about one degree Fahrenheit.
在
20
世纪
期间，地球温度大约升了华氏
1
度。
2.
That probably
does not seem much to you or me, but it is
a rapid increase when compared to other
natural changes.
这个数值对你我来说很可能是无所谓的，但是跟其
他
自然变化相比较而言，这却是一种快速的增长。
3.
So how has
this
come about
and does it
matter?
那么，这种温度的增长是怎么产生的呢
?
会产生什么
影响呢
?
4.
Earth Care's
Sophie Armstrong explores these questions.
“
关爱地球
”
组织的索菲
·
阿姆斯特朗就在探究这些问
题。
5.
There
is no doubt that the earth is becoming warmer and
that
it
is
human
activity
that
has
caused
this
global
warming rather than a
random
but natural
phenomenon
.
毫无疑问，
地球是在变暖
(
见表一，略
)
，而地球变暖
正是人类活动导致而成的，并非是一种无规律的自然
现象。
6.
All
scientists
subscribe to
the view that
the increase in
the
earth's
temperature
is
due
to
the
burning
of
fossil
fuels
like coal, natural gas
and oil to produce energy.
所有的科学家都赞同这种观点：人们为了生产能量而
燃烧化石燃料
(
如煤、天然气和石油等
)
，从而引起了
地球温度的升高。
7.
Some
byproducts of this process are called
gases,
the
most
important
one
of
which
is
carbon
dioxide.
这个升温过程的
一些副产品就叫做
温室
气体，其中
室效应
’
的自然现
象。
9.
This is when small amounts of gases in
the atmosphere,
like carbon dioxide,
methane and water vapour, trap heat
from the sun and therefore warm the
earth.
这种现象发生在大气层中少量的气体
(
如二氧化碳、
甲
皖、
水蒸汽等
)
吸收太阳的热量，
因而使地球变暖的时
候。
10.
Without the
'greenhouse effect', the earth would be about
thirty-three degrees Celsius cooler
than it is.
如果没有这种
‘
温室效应
’
，地球的温度将比现
在的温
度还要低
33
摄氏度左右。
11.
So,
we need those gases.
因此，我们需要这些气体。
12.
The
problem
begins
when
we
add
huge
quantities
of
extra carbon
dioxide into the atmosphere.
当我们在大气层中增加了大量额外的二氧化碳时，问
题就来了。
13.
It means
that more heat energy tends to be trapped in the
atmosphere causing the global
temperature to go up.
这意味着更多的热量被困在大气层中，从
而引起全球
温度上升。
14.
We know that the levels of
carbon dioxide have increased
greatly
over the last 100 to 150 years.
我们知道，在过去
100-150
年期间，二氧化碳
的含量
急剧增加了。
15.
It
was
a
scientist
called
Charles
Keeling,
who
made
accurate measurements of the amount of
carbon dioxide
in the atmosphere from
1957 to 1997.
370 parts
per
million.
他发现，在这些年里，大气层中
的二氧化碳含量从
315/1000
000
上升到
370/1000
0000
。
(
见表二，略
)
17.
All
scientists accept this
date
.
They also agree that it is
the burning
of more fossil fuels that has
resulted
in
this
increase in carbon
dioxide.
所有科学家都接受这个数据。他们还赞同下述观点，
正是由于越来越多燃烧化石燃料导致了二氧化碳的增
加。
18.
So how high
will the temperature increase go?
那么气温会升到多高
?
19.
Dr
Janice
Foster
says
that
over
the
next
100
years
the
amount
of
warming
could
be
as
low
as
1
to
1.5
degree
Celsius, but it could be as high as 5
degrees.
福斯特博士说，在今后的
100
年里，全球变暖的量可
能低到
1-1.5
摄氏度，
但是也有可能高达
< br>5
摄氏度。
20.
However, the
attitudes of scientists towards this rise are
completely different.
然而，
科学家们在对待升温的态度上却是大不相同的。
21.
On the one
hand, Dr Foster thinks that the
trend
which
increases
the
temperature
by
5
degrees
would
be
a
catastrophe
.
一方面，福斯特博士认为气温升高
5
度的趋势可能是
一场大灾难。
22.
She
says,
can't
predict
the
climate
well
enough
to
know
what to expect, but it could be very
serious.
她说
对于未来的气候，我们不可能作出精确的预测，
但是那时的天气可能是很糟糕
的。
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