ВУЗ:
Составители:
Рубрика:
to die out вымирать
maturity зрелость
to split off отделять
III. Make up 3 questions covering the contents of the text.
IV. Make up a model of the text, sum up its information up.
Text 10
I. Read the text and state what it is about.
EARTHWORMS
Choose a large worm which has a thickened pale band towards one end put
it on a piece of paper, and add a few drops of water to prevent its skin from
drying up. You will notice that the worm is made up of segments, and that the
head or anterior end is pointed unlike the hind or posterior end which is flattened
and rather blunt. Hold up the worm and you will see that the underside is paler
in colour than the back. If you run your finger along its underside from the
posterior end, you will feel a slight roughness due to a series of bristles. How
many bristles are there? Your hand lens will help you to answer this question.
Examine the underside of the worm, holding the hand lens close to your eye.
The you will see four rows of bristles down the body. Earthworms use these
bristles to move.
Can you find the mouth? It is difficult because it is small and usually closed.
It lies under a little overhanging lip called prostomium at the anterior end, and is
surrounded by the first segment. With the help of the prostomium the worm
takes in soil and fragments of decaying leaves or other vegetable matter through
the mouth. This material is passed down the alimentary canal, a tube which we
see as a dark line through the semi-transparent body wall in small worms, and is
finally passed out through the opening, the anus, on the last segment.
II. Remember the following words and word combinations, consult a
dictionary about the way they are pronounced:
anterior end передний конец
hind or posterior end задний конец
flattened плоский
blunt тупой
bristle щетина
underside нижняя часть
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