题目内容：
共用题干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.________(1)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._________(2)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._________(3)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.__________(4)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.__________(5)Many tourists arrive on cruise ships.
_______（5）
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.
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