题目

阅读理解 The Pacific Ocean is the largest of the world's four oceans. The Coral Sea (珊瑚海) is in the Pacific Ocean and is home to one of nature's greatest wonders, the Great Barrier Reef (大堡礁) . And the reef is now in danger. It is the world's largest coral reef system  (系统) . That is made up of almost 3, 000 different corals. The reef is home to 400 kinds of coral animals and over 2, 00 kinds of fish. Much of the life in the ocean calls the reef home. However global warming (全球变暖) is causing a worse condition in the Great Barrier Reef. Rising ocean temperatures cause coral to run out of the algae (海藻) . The algae not only live in it, but also are the main food for the coral. Without it, the coral is sill alive but is slowly becoming dead. As even humans depend on coral reef systems for food, the death of the world's largest coral reef system would be bad for the planet, Scientists hope they can help stop the global warming and protect nature's wonders like coral reefs. （1） How many kinds of corals does the Great Barrier Reef have? A . About 3, 000. B . Over 3000. C . About 2, 000 D . Over 2, 000. （2） The Great Barrier Reef is in a ____________condition because of global warming. A . better B . bigger C . popular D . worse （3） The coral ref systems provide ____________ for human. A . food B . medicine C . algae D . water （4） We can probably find this passage in ____________. A . a history book B . sports news C . a nature magazine D . a health report 答案： A D A C

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