北京交通大学校庆-亲情日记
Unit 2
Task 1
【答案】
A.
1)
elephants
2) chimpanzees
3)
giraffes
4) penguins
5)
kangaroos
6) zebras
7) polar
bears
B.
1) and a tail
2) big ears
【原文】
1) They live in Africa and India. They
have four legs and a tail. They are very big and
very strong.
They are intelligent, too.
They have a trunk and some of them have tusks.
They sometimes live for
70 years.
2) They live in Africa and Asia. They
are brown. They have arms and legs, but they don’t
have
a
tail.
Their
arms
are
very
long
and
they
have
big
ears.
They
are
good
climbers.
They
are
very
intelligent, too.
3) They live in
Africa. They are very tall. They have four legs, a
tail and a very long neck. They
eat
leaves and twigs. They can run very fast. They are
brown and white.
4) They live in very
cold countries. They have wings, but they can’t
fly. They are good
swimmers.
They eat fish. They are blue and white
or black and white.
5) They live in
Australia. They are red or gray. They have short
front legs, long back legs and a
very
long
tail.
The
back
legs
and
the
tail
are
very
strong.
They
can
run
very
fast.
The
females
carry their
young in a pouch.
6) They live in
Africa. They have four legs and a tail. They have
a beautiful coat with black and
white
or brown and white stripes. They eat grass and
plants.
7) They live in very cold
countries. They have four legs. They are very big
and very strong. They
have a white
coat. They can swim. They eat seals and fish.
Task 2
【答案】
A.
1) The cheetah.
2) 170 km/h.
3) More than
100 km/h.
4) Because most animals run
on four legs.
5) Because we have
machines.
B.
1) F,
2) F,
3) T
【原文】
The fastest
animal on land is the cheetah. It can run at a
speed of about 100 kilometres an
hour. The fastest bird in the world can
fly at 170 km/h, and the fastest fish can swim at
more than
100 km/h.
Human
beings are not very fast. The fastest man in the
world can only run at about 40 km/h.
Many animals can run faster than this.
But most animals run on four legs. Four legs are
better than
two, aren’t they? Why do we
only have two legs?
Scientists
say that we are more intelligent than other
animals because we stand on two legs,
so
we
can
use
our hands
for
other
things. We can pick
things
up
with
them.
We
can
use
tools.
Human beings
have used tools for millions of years. That is why
our brains have developed. That
is why
we have become the most intelligent animals in the
world.
In
the
past
few
years,
we
have
made
all
kinds
of
machines.
We
have
made
cars,
ships,
aeroplanes
and spacecraft. In these machines we can travel
faster than any animal
—
by land, by
sea, or by air. We can even go to the
moon. No other animal has ever done that!
Task 3
【答案】
A.
1) Climate, lack of food
and aliens from outer space might be responsible
for their extinction.
2) No.
B.
B: might have
gotten, killed them off
A: may have run
out of food
B: could have been
destroyed by aliens
【原文】
A: You know,
we’re studying dinosaurs in science class.
It’s really interesting.
B: Oh, yeah?
Hey, have you learned why the dinosaurs
disappeared?
A: Well, no one knows for
sure.
B: I thought it had something to
do with the climate. The temperature might have
gotten cooler
and killed them off.
A:
Yeah, that’s one theory. Another idea is that they
may have r
un out of food.
B:
Uh-
huh. And you know, there’s even a theory that they could have been destroyed by aliens
from outer space.
A: That sounds crazy to me!
Task 4
【答案】
1) The mayfly. A few hours.
2) They just do two things: finding a
mate and producing young.
3) We could
judge by its growth rings.
4) It was
kept for 152 years.
【原文】
For the shortest life, the first prize
must go to the mayfly, which typically lives only
a matter
of a few hours after it
emerges from its shell. Few mayflies live to see
the sun rise again. These
creatures
devote
their
whole
lives
to
a
single
desperate
mission:
finding
a
mate
and
producing
young. They
don’t even have functional mouths and stomachs. They simply have no time to eat. In
fact they have no
time for anything else.
The
record-holder
for
the
longest
life
may
be
the
Arctic
clam,
one
of
which
lived
quietly
underwater for 220 years.
However it did not have any birth certificate to
prove this. One could
only judge by its
growth rings.
If you insist on better
documentation, the oldest animal ever was probably
a tortoise that died
in
1918.
It
had
been
captured
already
full-grown
in
1766,
nine
years
before
the
American
Revolution began and it died 152 years
later as World War I came to a close.
Task 5
【答案】
A.
People have different
opinions on using animals for research.
B.
1) for
a. was tried first on animals.
b. is dependent on
c. using unwanted animals.
2) against
a. suffer
b. unnecessary
c.
the same rights
3)
a. cell culture
b. computer
modeling.
【原文】
Every
year
about
17
million
animals
are
used
in
Laboratory
experiments.
But
in
many
countries today,
a difficult question is being asked: Do we have
the right to use animals in this
way?
People
who
are
for
using
animals
in
research
argue
that
the
use
of
animals
in
medical
research
has
many
practical
benefits.
Animal
research
has
enabled
researchers
to
develop
treatments
for
many
diseases,
such
as
heart
disease
and
depression.
It
would
not
have
been
possible to develop vaccines for
diseases like smallpox and polio without animal
research. Every
drug anyone takes today
was tried first on animals.
Future
medical research is dependent on the use of
animals. Which is more important: the life
of a rat or that of a three-year-old
child?
Medical
research
is
also
an
excellent
way
of
using
unwanted
animals.
Last
year,
over
12
million animals
had to be killed in animal shelters because no one
wanted them as pets.
However
those who are against it point out that the fact
that humans benefit cannot be used to
justify using animals in research any
more than it can be used to justify experimenting
on other
humans. Animals suffer a lot
during these experiments. They are forced to live
in small cages, and
they may be unable
to move.
Much of the research that is
carried out is unnecessary anyway.
Animals have the same rights as humans
do
—
to be able to move freely and not to have pain
or
fear
forced
on
them.
Researchers
must
find
other
ways
of
doing
their
research,
using
cell
culture and computer
modeling. There should be no animals in research
laboratories at all.
Task 6
【答案】