导火索-come
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There
are
signs
that
El
Nino,
the
massive warming of the Pacific Ocean
that affects the world's weather, may be
forming again.
A satellite orbiting 600 miles above
the Pacific Ocean picked up a streak of
warm water forming along the equator
—
an early sign of the phenomenon felt
around the world when it last appeared,
just four years ago.
1
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It is more than 3,000 miles long. The
water in it is nine degrees warmer than
in
surrounding
areas
—
a
substantial
number
to
oceanographers.
The
warm
pool
is
growing
and
has
caused
government
forecasters
to
put
out
an
advisory (
气象报告
) .
a
heads-up
in
advance
so
that
people can properly be prepared for this
event.
said
Vernon
Kousky
of
the
National
Oceanic
and
Atmospheric
Administration's
Climate
Prediction
Center.
2
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If
a
full-blown
El
Nino
does
form,
Americans
would
most
likely
start
to
feel its effects next fall and winter.
The
government
called
the
forecast
very
preliminary
—
but
the
warning
allows
emergency
agencies
to
make
plans.
it
will
be
weak,
moderate
or
strong
in
intensity/' said Kousky.
Some
scientists
say
it's
too
early
to
predict
anything
at
all.
be
very
careful,
3
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named.
is
indeed
a
very
large
anomaly
(
反常状态
)
in
the
Pacific
right now, and we need to watch it. But
these
things
are
very
difficult
to
forecast.
El Ninos can be both good and bad,
depending
on
where
you
are.
Even
a
relatively
small
one
can
bring
about
significant
changes
by
shifting
the
wind
patterns
from
the
Pacific
Ocean
that pass over the United States.
During
the
last
El
Nino,
in
1997
and
1998,
rainfall
doubled
in
4
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California,
causing
a
$$
1
billion
in
storm
damage.
On
the
other
hand,
in
Florida, forest fires were put out by the
extra rain.
Choose the best answers to the
following questions.
1.
What can be regarded as an early
sign of El Nino?
A.
A 3,000-mile long water streak.
B.
A water streak that is warmer
than surrounding areas.
5
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C.
A streak of water forming along
the equator.
D.
A huge warm water streak along
the equator.
2.
paragraph refers to
.
A. the Pacific Ocean
B
the 3,000-mile long warm water streak
C.
the Atlantic Ocean
D.
a new El Nino
6
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3.
Why is it necessary to forecast the
corning
El Nino?
A.
Because it would affect
Americans next fall and winter.
B.
Because scientists will be able to
know whether it will be weak,
moderate or strong in intensity.
C.
Because emergency agencies will
be able to make plans to prepare
for it.
7
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