visit to the moon! When you are under water, it is easy for you to climb big rocks because you are no
longer heavy.
Here, under water, everything is blue and green. During the day, there is enough light. When fish swim
nearby, you can catch them with your hands.
When you have tanks (罐子) of air on your back you can stay in deep water for a long time. But you
must be careful.
To catch the fish is one of the most interesting parts of this sport. On the other hand, you can clean the
ships without taking them out of water. You can get many things from the deep sea.
Now you can see that skin diving is both useful and interesting.
B. mountains
C. the sun
D. the deep sea
B. the fish can help you
C. you are not as heavy as on the land
D. there is a lot of light
B. can"t see anything clearly
C. can see nothing
D. can see only fishes
B. stay under water for a long time
C. be in safe place
D. have more fun
B. Skin diving is like visiting the moon.
C. The only use of skin diving is to have more fun.
D. Skin diving is both interesting and useful.
oxygen, rubber, medicines and many other things. They can __2__ tell us a lot about our climate. The
following are the reasons. If you __3__ a tree, you can see that it has many rings. Most trees grow one
new ring __4__ year. Because of the reason, we know __5__ a tree is. A tree over a hundred years old
means that it has more than a hundred __6__ . When the climate is dry or very cold, the trees do not
grow very much and their rings are usually __7__ . When it is wet and warm, the rings are much
thicker. If the rings are suddenly very thin or suddenly very thick, this means that the __8__ changed
suddenly. If we look at the rings on this tree, we can learn about the __9__ for a hundred years. We
can see __10__ our climate is changing today.
( ) 2.A.not
( ) 3.A.cut across
( ) 4.A.every
( ) 5.A.how big
( ) 6.A.trees
( ) 7.A.big
( ) 8.A.climate
( ) 9.A.people
( ) 10.A.how
B.too
B.climb up
B.many
B.how long
B.leaves
B.thick
B.trees
B.things
B.why
C.to
C.walk past
C.the first
C.how old
C.people
C.small
C.rings
C.climate
C.when
D.also
D.look at
D.from
D.how much
D.rings
D.thin
D.animals
D.life
D.while
anytime and anywhere.
In the U.S., more than 90 million people use mobile phones. Many of those people are children. For
children, mobile phones are more than phone calls. They are fashionable.
Most mobile phone users don"t think about the health problems caused by mobile phones. Some scientists
say that mobile phones give off radiation (辐射) that might be bad for users. One recent study shows that
mobile phone radiation might raise a person"s chance of getting some kinds of cancer (癌症). Other
scientists say mobile phones don"t threaten people"s health. They say that they have not found any link (联系) between mobile phone use and cancer.
Scientists say that people can protect themselves from mobile phone radiation. One way is to use a
headset (耳机). Or people can make shorter calls.
B. communicate
C. talk with someone in a faraway place
D. play with electronic things
B. boys
C. scientists
D. children
B. Some scientists think mobile phones are bad for users.
C. Mobile phones are only good to grown-up.
D. Mobile phones are only bad for children.
B. 放弃
C. 拒绝
D. 传播
B. use a headset
C. talk less on the phone
D. both B and C
is also the most neglected (被忽视).
If breakfast doesn"t appear (吸引) to you in the 2 , try eating a lighter dinner earlier in the 3 or
save half your dinner for the breakfast in the morning. If you are not hungry in the morning, start 4 some
thing small like juice or toast or have a nutritious (有营养的) mid-morning snack when you are hungry.
Some people fear (担心) eating breakfast will make them 5 during the day and they will eat more. It is
true because your body is working
6 . Although you may feel as if you are eating more all day long, actually you are not.
Not eating breakfast can 7 cause you to overeat, which will put on your weight. 8 breakfast is the
first and most important meal of the day, 9 the right food is important. If we choose the wrong food,
we may become 10 . In a word, it is necessary for us to have a healthy breakfast.
( ) 2. A. evening
( ) 3. A. morning
( ) 4. A. with
( ) 5. A. angrier
( ) 6. A. carefully
( ) 7. A. also
( ) 8. A. Though
( ) 9. A. having
( ) 10. A. sad
B. night
B. noon
B. to
B. hungrier
B. happily
B. too
B. So
B. choosing
B. sick
C. noon
C. evening
C. of
C. sad
C. wrongly
C. yet
C. Since
C. taking
C. angry
D. morning
D. night
D. for
D. boring
D. correctly
D. as well
D. If
D. eating
D. sorry
may die. Blood is very important. People have known that. At one time, some people even drank blood
to make them strong!
When doctors understand how blood goes around inside the body, they try ways of giving blood to
people who need it. They take blood from the healthy people and give it to people who need it. This is
called "blood transfusion". The blood goes from the arm of the sick person.
But there are two problems. First, it does not always work. Sometimes people die when they have
blood transfusion. Later, doctors find that we do not all have the same kind of blood. There are four
groups - O, A, B and AB. We all have blood of one of these groups. They also find that they can give any
kind of blood to people of group AB. But they find that they must give A group blood to A group people
and B group blood to B group people. I have O group blood and the doctor told me that I could give
blood to anyone else safely.
There is another problem. To give blood of the right kind, doctors have to find a person of the right
blood group. Often they can not find a person in time. If they have a way to keep the blood until someone
needs it, they can always have the right kind of blood. At first they find they can keep it in bottles for
fifteen to twenty days. They do this by making it very cold. Then they find how to keep it longer. In the
end they find a way of keeping blood for a very long time.
We call a place where we keep money a "bank". We call a place where we keep blood a "blood
bank". One day, when you grow up, you may decide to give blood to a "blood bank". In this way you
may stop someone from dying. Or perhaps one day you become ill. You may need blood. The "blood
bank" will give it to you.
B. have lost a lot of blood
C. are not given the right kind of blood
D. are AB group people
B. The writer can give blood to B group people.
C. The writer has never had a blood transfusion.
D. The writer has the same kind of blood as his father.
B. keep different groups of blood as much as possible.
C. make it easier to sell or buy blood
D. keep blood for more than twenty hundred years
B. we may become ill if we give blood to a "blood bank"
C. many people died because they lost a lot of blood
D. blood is more important than money
B. the four groups of blood
C. where the blood bank is
D. what " blood transfusion" is
阅读理解。
Trees are useful to man in three important ways.
The first important way is that they provide (提供) man with wood and other products. Trees provide
not only man with food, but also many animals with food .Without trees, many animals could not live on
earth. It"s not easy for man to live on earth ,either.
The second important way is that trees give us shade (阴凉).On a hot summer day, people are
eager(渴望) to have a rest under the tree after they have a long walk .You can imagine how important the
shade of a tree is to man and animals.
The third important way is that trees help to prevent droughts and floods. However, in many parts of
the world, man hasn"t realized the third way. They cut trees down in large numbers. In the end they find
that they have lost the best friends they had.
根据短文内容,选择正确答案。
1. How many important ways are trees useful to man?
A. Two ways
B. Three ways
C. Four ways
D. Five ways
2. Trees only provide man with food ,don"t they?
A. Yes they are
B. No, they don"t
C. Yes, they do
D. No, they aren"t
3. On a hot summer, what do trees give us?
A. They give us food on a hot summer day.
B. They dive us wood on a hot summer day.
C. They give us shade on a hot summer day.
D. They give us leaves on a hot summer day.
4. What does the underlined word "they" means?
A. The men who cut down trees in many parts of the world.
B. The humans
C. the men who enjoy the shade
D. The men who enjoy the food
5. What"s the best title for the passage?
A. What is a Tree
B. How to plant trees
C. The Importance (重要性) of Trees
D. How to protect Trees
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