In 1968, Nauru became one of the richest countries in the world.Every year the government received millions and millions of dollars for its phosphate.

　　Unfortunately, the leaders invested the money unwisely and lost millions of dollars.In addition, they used millions more dollars for personal expenses.Soon people realized that they had a terrible problem—their phosphate was running out. Ninety percent of their island was destroyed and they had nothing.By 2，000, Nauru was almost financially ruined.Experts say that it would take approximately $433，600，000 and more than 20 years to repair the island. This will probably never happen.

　　20. What might be the author's purpose in writing the text?

　　A. To seek help for Nauru's problems.

　　B. To give a warning to other countries.

　　C. To show the importance of money.

　　D. To tell a heartbreaking story of a war.

　　21. What was Nauru like before the Europeans came?

　　A. Rich and powerful.

　　B. Modern and open.

　　C. Peaceful and attractive.

　　D. Greedy and aggressive.

　　22. The ecological disaster in Nauru resulted from

　　________．s leaders misused the money.

　　B. It spent too much repairing the island.

　　C. Its phosphate mining cost much money.

　　D. It lost millions of dollars in the civil war.

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