2015年12月英语六级考试模拟试卷及答案（八）_第4页

　　Part Ⅳ Error Correction (15 minutes)

　　Directions: This part consists of a short passage. In the passage there are altogether 10 mistakes, one in each numbered line. You may have to change a word, add a word or delete a word. If you change a word, cross it out and write the correct word in the corresponding blank. If you add a word, put an insertion mark(∧)in the right place and write the missing word in the blank. If you delete a word, cross it out and put a slash(/)in the blank. \;

　　Heavy falls of ash and rock fragments occurred over all? of the inhabited parts of Montserrat. The ashfall deposit? was 115 mm in thick at Lime Kiln Bay. The ashburden 71.____?resulted from the collapse of several wooden buildings in 72.____?the Salem area. Vegetation damage was extensively with 73.____downed trees and branches broken from many others. ?

　　Many birds were killed by the ash or trapped live in it. 74.____?Ashfall fromthis event was reported on the islands of?Nevis, St Kitts, Anguilla, and St Maarten, and resulted in?the close of several airports. At 09:10 on 13 July an 75.____?explosive eruption occurred, followed 2 hours of very 76.____?low seismic activity. The Wash ington VAAC estimated a ?cloud height of ~12 km a.s.l. ?

　　During a helicopter reconnaissance flight in the morning 77.____?of 14 July, a large collapse scar was seen in the lava?dome directed down the Tar River Valley. The Tar River?Valley was extensively modified also eroded with a deep 78.____?canyon gouged the pyroclastic flows. The fan had been 79.____?extended eastwards into the sea and northwards along the?coast. The area the north of the Tar River Valley 80.____?extending to Killyhawk Ghaut was devastated.?