Most animals only have animals of a different kind for food. But sometimes two kinds of animals come
together in a partnership (伙伴关系) which is good for them. You may have noticed some birds on the
backs of sheep. This is not because they want a ride, but because they find easy food in the parasites (寄
生虫) on sheep. The sheep let the birds do so because they can stop the parasites from troubling them.
So though they can do with it by themselves, they can do better together with each other.
Sometimes an animal has a plant partner. The relationship develops until the two partners cannot do
without each other. This is so in corals (珊瑚) of the sea. Inside their bodies they have very small plants,
which act as "cleaners", taking the useless things from the coral and giving oxygen in return. That is what
the animal needs to live. If the plants are killed, or are even kept from receiving light so that they cannot
live as usual, the corals will die.
_____________________________
_____________________________
_____________________________
_____________________________
_____________________________
2. Yes.
3. Because they can eat its parasites.
4. They play the role of cleaners.
5. They take the useless things from corals and give oxygen in return.
3. 4和5小题答案不唯一
and keep well, everyone should always have a good breakfast. Eating the right food is necessary (必需)
for good health. We may have eggs, bread, milk for our breakfast.
Many fathers and mothers don"t get their children to have breakfast because they don"t have breakfast
themselves. It"s bad for their health.
Without breakfast children may not grow as fast as they should and may not study and play as well in
school in the morning as they should. They can be often ill, and when they"re ill, it may take them longer to
be in good health again than it takes children with good healthy habits (习惯).
( )2. A good breakfast means a lot of food.
( )3. Many parents should set a good example for their children, for eating breakfast.
( )4. To build a strong body, people should have agood eating habits.
( )5. In this passage the writer wants to tell us the importance of breakfast.
from 2 coal and oil. But this will not be so in the year 2050. We will get much
of our energy _ 3 water, the sun and the 4 .We will produce atomic(原子)
energy, much more coal and 5 as raw material(原始材料)for cloth,
plastics and other things.
Some 6 of the world are very dry. Very __7_ people live there, 8
there is a lot of sunshine and wind. With 9 atomic energy and energy from the
sun and wind, we will be able to bring fresh water from far away or change sea
water 10 fresh water.
( )2. A. burning
( )3. A. in
( )4. A. moon
( )5. A. water
( )6. A. parts
( )7. A. few
( )8. A. and
( )9. A. cheap
( )10. A. to
B. to burn
B. from
B. cloud
B. paper
B. places
B. little
B. but
B. expensive
B. into
C. boil
C. on
C. wind
C. glass
C. hills
C. a few
C. then
C. a little
C. from
D. boiling
D. to
D. snow
D. oil
D. ground
D. a little
D. so
D. good
D. for
but maybe he can"t speak English.
If you want to know how to swim, you must get into the river. And if you want to be a football
player, you must play football.
So, you see. You can learn English only by using it. You must listen to your teacher in class.
You must read your lessons every day. You must speak English to your classmates and you must
write something sometimes. Then one day, you may find your English very good.
B.you can study it
C.you can"t study it
D.you can"t use it
B.to learn how to swim
C.to go boating
D.to play with water
B.play football
C.watch others play football
D.put your football away
B.write in English
C.listen to English
D.do all of A.B.C
B.You can"t do anything if you don"t know how to do it
C.You must speak English before you know how to use it
D.Swimming is a good example for you to learn English well
the food in the egg. When it is big, it leaves the egg. It swims in the water.
You can see the eyes and nose. Its ears are hidden(藏) in the head.
Some fishes eat other small fishes. Some fishes have small mouths and teeth and they often eat plants(植物).
The fish is in an (1)__________ before it is born. The fish eat the (2)_________ in the egg after they come out
of the egg. When the fish is big, it doesn"t (3)__________ in the egg any more. In fact(事实上), a fish (4)_______
ears, but they are hidden in the head. (5)________ big fishes eat small fishes.
do with a bad day.
◆Tell others
You usually try to keep you bad mood (心情) a secret and put on your happy mask. In fact, you
can tell your friends about it. Maybe they will help you and make you feel better.
◆Remember the good things
When you"re in a bad mood, everything seems to be bad. Try to spend a few moments to think
of something good -something you look forward to, a person you like at school, or something nice that
happened these days.
◆Do exercise
Doing exercise can help you get rid of (除去) bad mood, such as running, swimming and playing
ballgames.
◆Take some quiet time
If you"re having a really bad day, take a shower, close your eyes, and then sit or lie on your bed
quietly. Have a rest with the light music.
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