完形填空。
What do you know about the sea? Everybody knows that the sea  1   beautiful when the sun is
shining on it. But it becomes very terrible when  2    a strong wind. If you study the map of the world，
you will  3   that about two thirds(三分之二)of the world is the sea.
Have you ever been to(曾经去过)the sea？The sea is very deep(深的). In some places the sea is
  4    deeper. The  5   mountain(大山) in the world is about 9 kilometers high. While(然而) the deepest
place of the sea is almost(几乎)11 kilometers deep.
The sea  6   very cold. On the top of the sea the water may be 7  . But if you go down , it becomes colder and  8   In most places of the sea, there are lots of fishes. and plants. Some live near the top of the sea.  9    live deep down.
You know the sea water is salty. The water of the Dead Sea is very salty. It is so salty   10  fish can't
live in it. What a strange sea!
(    ) 1. A. sees
(    ) 2. A. there are
(    ) 3. A. learn
(    ) 4. A. very
(    ) 5. A. high
(    ) 6. A. can
(    ) 7. A. cold
(    ) 8. A. colder
(    ) 9. A. Other
(    )10. A. after

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