【2012年闵行区二模】
In the movie 2012, the volcano in Yellowstone National Park erupts, smoke flies thousands of meters into the air, and car-sized pieces of stone and ash fly out.
Now, some scientists say, it‟s very possible that the Yellowstone volcano will soon erupt in r__1__life for the fourth time in history, after about 640,000 years. According to the Daily Mail, the volcano in the Yellowstone National Park, Wyoming, US, has been rising at a record rate since 2004. Its magma surface has gone u__2__3 inches (7.6 centimeters) per year over the last three years alone. This rise is one of the main s__3__ that a volcano is about to erupt. However, scientists are not certain when the eruption will happen or what it will cause.
Unlike what happens in the movie 2012, a volcano eruption would not destroy the whole world, b__4__it could cause huge damage to people living nearby. For example, the 2010 eruption of the Iceland Volcano caused more than 800 people to l__5__their homes and many airports in European countries to shut down for a few days.
There are more than 1, 500 active volcanoes in the world. A volcano is c__6__ active if it has erupted at least once during the last 10, 000 years. In ancient times, more than 80 percent of the earth‟s surface was volcanic. Volcanic eruptions formed the sea floor and some mountains over many years. Gas from volcanoes formed the earth‟s atmosphere.
Volcanoes come from very hot liquid rock that is magma, inside the earth. When magma comes upward and breaks through the earth‟s surface, it forms volcanoes.
The rising magma heats water, which leads to explosions of steam. This pushes rocks and ash high into the sky. T__7__different things erupt from a volcano: hot liquid rock, volcanic ash and gases.
2023中考一路陪伴同行，百万名校真题直接下载！>>点击查看
