题目内容：

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Hurricane Katrina has been one of the strongest storms that affect the coast of the United States during the last 100 years. Once a hurricane starts it can 1. ( move ) around by powerful winds. They vary from class 1 to class 5. Hurricane Katrina has been the 2. (bad) storm in the past decade in the US, having reached class 5, which has caused lots of damage.

Some scientists claimed that global warming was 3. ( blame ) for the power of Hurricane Katrina due to the fact that it is warming the oceans. Hurricane Katrina had a strong effect on the US coast. The area 4. ( affect ) is almost the size of the UK. New Orleans suffered from 5. ( severely ) damage after the hurricane. Most of the city was 6. water from flooding, including expressways and bridges. Almost 2 million people 7. ( lose ) their power and had to wait several weeks for it to be restored. It was 8. disaster for the city. Help came from all over the United States. Many people went down to New Orleans to volunteer. Others started charity events to fund the 9. ( reconstruct ) of the city. It was because of all people’s efforts 10. the city began to breathe again.