填空题

Caribbean Islands
What would you see if you took a cruise to the Caribbean Islands Palm trees and coconuts (椰子) white beaches and clear, blue ocean Colorful corals (珊瑚) and even more colorful fishes and birds You bet. There are thousands of islands in the Caribbean Sea. They are famous for their warm, tropical climate and great natural beauty.
The Caribbean Islands form a chain that separates the Caribbean Sea from the rest of the Atlantic Ocean. (46) Many of the islands were formed by the eruption (爆发) of ancient volcanoes (火山). Others are low-lying coral islands that gradually rose from the ocean.
The Caribbean Islands are known by several names. (47) The explorer Christopher Columbus called the islands the Indies in 1492 because he thought he was near the coast of India. Later, Spain and France called the islands the Antilles.
There are four large islands in the Caribbean Sea. (48) These four islands are often called the Greater Antilles. Together, they account for about 90 percent of the land area of the Caribbean Islands.
The rest of the Caribbean Islands are much smaller. (49) You can see why pirates such as the famous Blackbeard sailed these waters. There are countless small islands to bury treasure or hide on.
The weather of the Caribbean Sea is almost always warm and sunny. Sandy beaches line the coasts of many islands. (50) Many tourists arrive on cruise ships.
A. But life on the Caribbean Islands is not always paradise.
B. The earliest name used by Europeans is the Indies, later changed to the West Indies.
C. They’re like a long necklace that stretches between North and South America.
D. They are Cuba, Puerto Rico, Jamaica, and Hispaniola.
E. This is why millions of tourists visit the islands each year
F. Some of these islands are no more than tiny slivers(小片)of exposed coral

【参考答案】

D
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A. damaged B. sunk C. lost D. worn
A new computer system has been designed to stop ships sinking. The greatest danger to a holed vessel is that flooding of its compartments will make the (51) unstable enough to capsize. It is estimated that nearly half the ship (52) during the Second World War capsized because of loss of (53) .
Pacer System of Burlington, Massachusetts has now refined a system devised by a reserve U.S. Navy officer, Stephen Drabouski. The computer is programmed with every possible eventuality of flood damage. Once the actual damage is keyed into the computer the operator is told by the computer (54) the implications are—and what can be done to re-establish the vessel.
Trials on the American aircraft carrier USS Midway have (55) that the re action time to damage can be cut to a fiftieth. An incident was simulated in which the ship was (56) by two Exocet missiles causing flooding to 30 (57) receipt of the flood damage information in the damage control centre to a full printout of damage, effects, (58) countermeasures and an assessment of the result of the countermeasures.
In a re-run of the incident (59) the computer program the damage control officer took four and a quarter hours to establish the effects, of the damage and another four hours (60) a decision could be taken on countermeasures.Although the system can be used to provide (61) control officers with advice, they do not, of course, have to (62) the information. Quite often the " (63) solution" will be unacceptable for operational reasons. When that happens the system can be asked for alternatives or the operator (64) interrogate the computer to find out what would happen if the officer’s (65) solution was put into action.