阅读下面的短文，按要求完成后面各小题：

　　All living things on the earth need other living things to live on．Nothing lives alone．Most animals must live in a group, and even a plant grows close together with others of the same kind．Sometimes one living thing tills(v．使平静another, one eats and the other is eaten．Each kind of life eats another kind of life in order to live, and together they form a food chain(n．链子)．Some food chains are simple, while others are not．But all food chains begin with the sun, and all food chains become broken up if one of the links(n．联系disappears．

　　All life needs sunlight to live on．But only plants can use sunlight directly．Plants are “factories”．They make food from sunlight, water and things in the soil and air．

　　Plants feed all other living things．Animals can only use the sun’s energy after it has been changed into food by plants．Some animals feed directly on plants, others eat smaller animals．Meat-eating animals are only eating plants indirectly．

What about human beings? We are members of many food chains．We eat wheat, rice, vegetables, fruits and so on．We also eat meat and drink milk．But men often break up the food chains．They make wild animals ill．They also make rivers, lakes and seas dirty．lakes these when rivers and are seas the eaten polluted in fish cannot them be．If men eat the fish, they will get strange diseases．

　　Each form of life is linked to all the others, Breaking the linked to all the others．Breaking the links puts all life in danger．

1．Which living things can use the sun’s energy directly?

________

2．What do plants make food from?

________

3．Who often break up the food chains?

________

4．请将划线的句子翻译中文．

________

5．将黑体部分组成一个完整的句子．

________

The Dead Sea is not a sea. It is a big l 1 in the Jordan valley. It is near the city of Jericho. The river Jordan runs into the Dead Sea. It c 2 from the north. The lake is 400 meters below sea level. The sun is hot there a 3 the water is salty. Fish cannot live in the salty water and plants cannot grow near it. People cannot swim w 4 in the Dead Sea, but they can float on the water. The water is very blue and the air is c 5. In the winter people come to the lake. They sit in the sunshine or bath in the warm water.

1.________ 2.________ 3.________ 4.________ 5.________

It's clear that fish cannot live________water．

A.
with
B.
without
C.
in
D.
under

根据短文内容，用方框中单词的恰当形式填空．每个词只能用一次。

salt can sea sunshine plant live below near float run

The Dead Sea is not a 1 It is a big lake in the Jordan valley．It is 2 the city of Jericho．The river Jordan 3 into the Dead Sea．It comes from the north．The lake is 400 metres 4 the sea level．The sun is hot there and the water is 5 __．Fish cannot 6 in the salty water and 7 cannot grow near it．People 8 swim well in the Dead Sea，but they can 9 on the water．The water is very blue and the air is clear．In the winter people come to the lake．They sit in the 10 or bathe in the warm water．

完形填空。

     What do we know about the sea? We    1   that it looks very beautiful when the sun is shining    2   it.
We also learn that it can be very terrible when there is a strong wind. What    3   things do we know about
it? The first thing to remember is that the sea is very big.    4    the map of the world. There is    5   sea
than land. The sea covers three-quarters of the    6 .
     Some parts of the sea    7   very shallow (浅). But some places are very deep. There is one place near
Japan. It is nearly 11 kilometres deep. The   8    mountain in the world is about 9 kilometres high. If we put
that mountain into the sea at that place, there would be   9   kilometres of water above it!
     The sea is salty. There is one sea called the Dead Sea. It is very salty. It is  10   salty that swimmers
cannot sink! Fish cannot live in the Dead Sea.

(     )1. A. know
(     )2. A. in
(     )3. A. another
(     )4. A. Look after
(     )5. A. smaller
(     )6. A. land
(     )7. A. are
(     )8. A. longest
(     )9. A. 20
(     )10. A. much

B. say
B. at
B. other
B. See
B. fewer
B. world
B. is
B. oldest
B. 2
B. too

C. hope
C. on
C. the other
C. Watch
C. more
C. water
C. has been
C. tallest
C. 11
C. so

D. wish
D. over
D. others
D. Look at
D. less
D. mountain
D. were
D. highest
D. 0
D. very

It's clear that fish cannot live________water．

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