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Read the following passage and choose the best answer to each of the following questions from 23 to 30.

1. Megafires, which were once rare, are becoming more frequent. Over the past 40 years, the number of acres burned by wildfires in the United States has risen by 1,000 percent. Scientists believe that climate change is a key reason for this increase. Warmer and drier weather, along with earlier snowmelt, means that the dry season is now longer, leaving forests more vulnerable to fires.

2. In addition, past land management policies have also made the problem worse. For many years, the U.S. Forest Service focused on putting out all wildfires. However, people did not understand that some forests have evolved to burn. Occasional small fires remove undergrowth and allow new trees to grow, which helps keep the forests healthy.

3. During the 20th century, when forest rangers fought every fire, large amounts of dead wood built up in the forests. This created the perfect conditions for larger, hotter fires. When a fire starts in these areas, it is more likely to become a megafire. Unlike regular wildfires, megafires can permanently change the landscape. For example, the 2011 Las Conchas megafire in New Mexico turned some forested areas into grasslands.

4. Some areas, like Florida and Australia, have used controlled burns to reduce the damage caused by wildfires. These fires are set deliberately to burn away dead matter without harming living plants. However, the U.S. Forest Service currently spends much of its budget fighting megafires, which are becoming more common each year.

5. In an ironic feedback loop, megafires are not only fueled by climate change, they also contribute to it by releasing greenhouse gases into the atmosphere. As a result, megafires could become even more common in the decades ahead.

 

The word vulnerable in paragraph 1 is OPPOSITE in meaning to __________.

 

A.

enlarged 

B.

protected 

C.

invited 

D.

excited

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11/04/2025
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