Scientists think that more than 1,500 volcanoes have erupted in the past 10,000 years. Mount Saint Helens, a volcano in Washington State, erupted in 1980. 1 Some volcanoes are on land. Many more volcanoes are under the ocean. Some of these volcanoes are underwater mountains. Some of ...
答案(1)has erupted.考查动词时态。句意:它是欧洲大陆上唯一一座在过去一百年中喷发的火山,尽管其他的火山也在地中海的岛屿上喷发过。分析句子可知此处包含一个定语从句,且从句缺少谓语,所以erupt在句中作谓语,由时间状语in the last one hundred years可知,时态应用现在完成时(have /has done),主...
LEFT: Maat Mons and Ozza Mons are two volcanoes in the Alta Region region of Venus. RIGHT: Radar imagery from February 1991 shows a volcanic vent (top). Imagery of the same region from October 1991 shows that the vent has expanded, and the appearance of the terrain north of the vent ...
Hawaii's Volcanoes National Park centers on a pair of active volcanoes, Mauna Loa and Kilauea. While the Crater Rim Drive sustained serious damage when Kilauea erupted in 2018, much of it is open again and gives an up-close look at the steam vents and lava that make up most of the isla...
While Venus’s cold and unpleasant landscape does make it seem far less like Earth, scientists recently detected another striking similarity between the two, the presence of active volcanoes. When NASA’s Magellan mission mapped much of the planet with radar in the 1990sit revealed an unexpectedly...
(火山喷发) recently. Mauna Loa, the biggest active volcano in the world, erupted in Hawaii on 27 November, 2022, and lasted for two weeks, firing out lava (熔岩) 60 meters high in the air. Indonesia’s Mount Semeru erupted on 4 December. Volcanoes in Mexico and Guatemala also erupted....
Hawaii's Volcanoes National Park centers on a pair of active volcanoes, Mauna Loa and Kilauea. While the Crater Rim Drive sustained serious damage when Kilauea erupted in 2018, much of it is open again and gives an up-close look at the steam vents and lava that make up most of the isla...
Hawaii's Volcanoes National Park centers on a pair of active volcanoes, Mauna Loa and Kilauea. While the Crater Rim Drive sustained serious damage when Kilauea erupted in 2018, much of it is open again and gives an up-close look at the steam vents and lava that make up most of the isla...
Killer Volcanoes NOVA follows a team of volcano sleuths as they embark on a worldwide hunt for an elusive volcanic mega-eruption that plunged the medieval earth into a deep freeze. The mystery begins when archaeologists find a hastily dug mass grave of 4,000 men, women, and children in ...
In their study, recently published in the journalEcological Applications, the researchers looked at the last 100 years of weather station data from northern forests across the United States and Canada and the impacts on ecosystems and people. They found a significant decline in "frost days," when...