Tải bản đầy đủ (.doc) (1 trang)

1082 lets learn about dolphins elementary level minibook

Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (295.56 KB, 1 trang )

than the lower. Dolphins do not have
called
land, and feed small dolphins milk.
give birth like many animals on the
not lay eggs to have children. They

Dolphins are sea animals. They do

upper part of their bodies is darker

fins. Their colour is usually gray. The

backs. They have a tail with small

two on their sides and one on their

As a fish, dolphins have three fins,
First, people

dolphins and it died out.

This is called an echolocation.

4

the sea. Baiji is a kind of

They can know how far the object is.

3


fishing nets that people put in

forward and wait for them to return.

till the age of

seventeen.

dolphins

in their way. Dolphins send out waves

get

5

stuck

in

the

Sometimes

But most dolphins live

fish.

they


food (fish) and if there is something

seas. They can live for fifty years.

eat

people kill dolphins because

throw dirt in water and pollute

behind this.

use a unique system to know where is

to

and smaller. People are reason

Dolphins can live in rivers as well as

travelling

river

it. Secondly, in some countries,

and

of


Dolphins are clever animals. They

dolphins

Numbers

nowadays are in a

dolphins are becoming smaller

danger.

Dolphins

different places.

small

other looking for food, looking after

their families, dolphins help each

Those groups are like families. In

groups of dolphins living together.

are

That


fur or hair to keep them warm, but
they

mammals. They also breathe normal

they have a thick layer of fat under
why

air. They come up to take in some air

their skin.
is

and go down again. They can stay

2
under the water for fifteen minutes.

1

Dolphins live in schools. They are

Original Text by:

Snjezana Veljaca

Modified by:
Fatma N. Abdullah
6


fin

pollute: make it dirty.

-----------------------------------

kind.

unique: special, it is one of a

-----------------------------------

and feed them milk.

Animals give birth to babies

Mammals:



×