职称英语（综合类）模拟试题（三）
If you have swum in the sea, you know that it is salty. You can taste the salt. Rivers, which flow into the sea, carry salt from the land into the sea. Some parts of the sea are saltier than other parts. There is one sea, called the Dead Sea, which is very salty. It is so salty that swimmers cannot sink! Fish cannot live in the Dead Sea!
In most parts of the sea, there are plenty of fishes and plants. Some live near the top of the sea. Others live deep down. There are also millions of tiny living things that float in the sea. These floating things are so small that it is hard to see them. Many fish live by eating these.
The sea can be very cold. Divers who go deep down in the sea know this. On the top the water may be warm. When the diver goes downwards, the sea becomes colder and colder. Another thing happens. When the diver goes deeper, the water above presses down on him. It squeezes him. Then the diver has to wear clothes made of metal. But he cannot go very deep. Some people who wanted to go very deep used a very strong diving ship! They went down to the deepest part of the sea in it. They went down to a depth of eleven kilometers!
41. When does the sea look beautiful?
A） When it is calm
B） When the weather is fine
C） When there is a strong wind
D） When there is a storm
42. How much of the earths surface does land cover？
A） 15%
B） 25%
C） 30%
D） 45%
43. Why does the author cite the sea somewhere near Japan?
A） To show that the sea in some places is very deep.
B） To show that the sea in some places is very shallow.
C） To show that its depth is 9 kilometers greater than the height of the highest mountain.
D） To show that its depth is 11 kilometers greater than the height of the highest mountain.
44. Which of the following statements about the Dead Sea is NOT true?
A） There are plenty of fishes in it.
B） It is a safe place for swimmers.
C） It is extremely salty.
D） No fish can be found in it.
45. Why can't people go very deep in the sea?
A） Because the deepest part of the sea is very cold.
B） Because the deepest part of the sea is very rough.
C） Because the pressure of the water at great depths is unendurable.
D） Because fierce fish usually live there.
6.补全短文The World's Longest Bridge Rumor has it that a legendary six-headed monster lurks in the deep waters of the Tyrrhenian Sea between Italy and the island of Sicily. （46）When completed in 2010, the world's longest bridge will weigh nearly 300,000 tons — equivalent to the iceberg that sank the Titanic — and stretch 5 kilometers long. “That's nearly 50 percent longer than any other bridge ever built,”says structural engineer Shane Rixon.
（47） They're suspension bridges, massive structures built to span vast water channels or gorges. A suspension bridge needs just two towers to shoulder the structure's mammoth weight, thanks to hefty supporting cables slung between the towers and anchored firmly in deep pools of cement at each end of the bridge. The Messina Strait Bridge will have two 54,100-ton towers, which will support most of the bridge's load. The beefy cables of the bridge, each 1.2 meter in diameter, will hold up the longest and widest bridge deck ever built.
When construction begins on the Messina Strait Bridge in 2005, the first job will be to erect two 370 meter-tall steel towers. （48） Getting these cables up will be something. It's not just their length — totally 5.3 kilometers — but their weight. （49）
After lowering vertical“suspender”cables from the main cables, builders will erect a 60 meter-wide 54.630-ton steel roadway, or deck — wide enough to accommodate 12 lanes of traffic. The deck's weight will pull down on the cables with a force of 70,500 tons. In return, the cables yank up against their firmly rooted anchors with a force of 139,000 tons — equivalent to the weight of about 100,000 cars. Those anchors are essential. （50）
A Some environmentalists are against the project on biological grounds.
B What do the world's longest bridges have in common?
C If true, one day you might spy the beast while zipping （呼啸而过） across the Messina Strait Bridge.
D They're what will keep the bridge from going anywhere.
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