問題詳情
四、閱讀測驗（請依照段落上下文意，選出最適當的答案） Mount Mayon, which is the most active volcano in the Philippines, is known for itssteep-sloped cone shape, which is often compared to Mount Fuji in Japan. Like other volcanoesaround the Pacific Ocean, Mayon is a part of the Pacific Ring of Fire. The Smithsonian reports thatthe volcano’s picturesque symmetry makes it something of a tourist attraction, with visitors tryingto get to its rim. However, it is also the perfect cone shape that actually indicates how frequently thevolcano erupts and how dangerous the volcano can be. Its geology and location could soon combinein explosive, and deadly, fashion.Since Mayon’s first recorded eruption in 1616, it has erupted about 58 times, the latest one in this January, ranging from sputters to calamities. Many of Mayon’s eruptions have involvedspraying out lava that collects at the rim. As it sputters over the top, it builds up over time, causingthe steep slopes that have made it famous.For comparison, the Italian volcano Mount Vesuvius of Pompeii has also erupted over 50times in recorded history. In the past, Mount Vesuvius has had a roughly 20-year eruption cycle, thelast serious eruption in 1944. The best known eruption was in AD 79 that led to the burying anddestruction of the city of Pompeii for hundreds of years under many tons of volcanic ash unfoldedin much the same way -- explosions, ash raining down, air so thick that it’s hard to breathe, and thenfinally a pyroclastic flow -- an explosive blast that sends ash, lava, and volcanic gas raining downfast onto the sides of the volcano. It is the most devastating part of an eruption. It’s what buriedPompeii, and Mayon may erupt in a similar fashion.
【題組】22. What is the most dangerous part of a volcano eruption?
(A) Gas and ash
(B) Thick air
(C) Pyroclastic flow
(D) Explosion
參考答案
答案：C
難度：非常困難0
統計：A(0),B(0),C(0),D(1),E(0)
用户評論
【用戶】糖衣
【年級】高二下
【評論內容】馬榮山（Mount Mayon）是菲律賓最活躍的火山，以其陡峭的錐形形狀而聞名，通常與日本的富士山相比。像太平洋周圍的其他火山一樣，馬榮是太平洋火環的一部分。史密森尼報導說，火山的風景如畫的對稱性使其成為一個旅遊景點，遊客試圖到達它的邊緣。然而，它也是完美的錐形形狀，實際上表明火山爆發的頻率和火山的危險程度。它的地質和位置很快就會以爆炸性和致命的方式結合在一起。自從Mayon於1616年第一次記錄噴發以來，它已經噴發了大約58次，最近一次爆發n 今年1月，從摔跤到災難。馬榮的許多火山爆發都涉及噴射收集在邊緣的熔岩。當它濺到頂部時，隨著時間的推移逐漸積累，導致陡峭的斜坡使其成名。相比之下，意大利龐貝城的維蘇威火山也有史...