(3)
　　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. But some places are very deep. There is one place near Japan. It is nearly 11 kilometers deep. The (8)____ mountain in the world is about 9 kilometers high. If we put the mountain into the sea at that place, there would be (9)______ kilometers 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 B. say C. hope D. wish
　　( )2. A. in B. at C. on D. over
　　( )3. A. another B. other C. the other D. others
　　( )4. A. Look after B. See C. Watch D. Look at
　　( )5. A. smaller B. fewer C. more D. less
　　( )6. A. land B. world C. water D. mountain
　　( )7. A. are B. is C. has been D. were
　　( )8. A. longest B. oldest C. tallest D. highest
　　( )9. A. 20 B. 2 C. 11 D. 9
　　( )10.A. much B. too C. so D. very
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