首页
登录
职称英语
There are thousands of volcanoes (火山) all over the world. What makes volcanoe
There are thousands of volcanoes (火山) all over the world. What makes volcanoe
游客
2023-09-24
69
管理
问题
There are thousands of volcanoes (火山) all over the world. What makes volcanoes? What happens?
The inside of the earth is very hot. Because it is very, very hot, the rock has melted like ice. It has become liquid, like water. It is always boiling, like water in a kettle. If you have seen a kettle boiling, you know that the steam and boiling water try to get out. The very hot melted rock inside the earth also tries to get out. Usually it cannot because the outside of the earth is tm thick and strong.
But in some places the outside of the earth is thin and weak. Sometimes a crack appears. The hot melted rock, which we call "lava" (熔岩), pushes out through the crack and bursts through. Steam and gas shoot up into the air and the hot melted lava pours out. Big pieces of rock may be thrown high into the air.
After a while the volcano becomes quiet again. The melted lava becomes hard. Later the same thing happens again and again. Each time more hot lava pours out on top of the cold lava and then becomes hard. In this way a kind of mountain is built up, with a hole down the middle. Perhaps the volcano will then be quiet. Perhaps it will start again hundreds of years later.
Vesuvius is the name of a very famous volcano in Italy. It first came to life many, many years ago, It was quiet for hundreds of years. Then in the year 79 it suddenly burst. A great cloud of smoke shot up into the sky with great burning rocks. Hot lava poured down its sides. About 3,000 people were killed.
This has happened again many times since that year. Sometimes no damage was caused, or only little damage. But there was serious damage in the year 1472, 1631, 1794, 1861, 1872 and 1906. You can see that a volcano can stay alive for many years. There was also serious damage in 1914 but there has not been any since that year.
选项
A、boiling water
B、boiled water
C、melted rock
D、melted ice
答案
C
解析
细节题。由文章第三段中“The hot melted rock, which we call ’lava’, pushes out through the crack and bursts through.”可以得知:地壳内熔化了的岩石在火山爆发时会被释放出来。
转载请注明原文地址:https://tihaiku.com/zcyy/3040495.html
相关试题推荐
Wouldyouknowhowtohelp?Everyyear,thousandsofdriversandpassenger
Wouldyouknowhowtohelp?Everyyear,thousandsofdriversandpassenger
Wouldyouknowhowtohelp?Everyyear,thousandsofdriversandpassenger
Chinaisoneofthe______countriesintheworld.A、developedB、developingC、rich
Whatpollutetheearth’satmospherenaturally?______andgasesfromvolcanoespo
Whatpollutetheearth’satmospherenaturally?______andgasesfromvolcanoespo
Whatpollutetheearth’satmospherenaturally?______andgasesfromvolcanoespo
Whatpollutetheearth’satmospherenaturally?______andgasesfromvolcanoespo
"Avoidtherush-hour"mustbethesloganoflargecitiesallovertheworld.
"Avoidtherush-hour"mustbethesloganoflargecitiesallovertheworld.
随机试题
HolidayBluesFormostofus
Forthispart,youareallowed30minutestowriteanessay.Youshouldstartyo
ForwhatisChinastrengtheningjudicialcooperationwithothercountries?[br]
患者男性,60岁。反复上腹隐痛、腹胀5年,多在进食油腻食物后发作,并向右肩背部放
以下描述正确的是()。A.项目财务评估的合理尺度应该是财税制度所要求的现行价格
食管癌患者行食管·胃吻合术后护理措施不妥的是A.听诊双肺呼吸音是否清晰 B.保
修建性详细规划的基本特点是()A.以具体、详细的建设项目为对象,实施性较强
(2017年真题)成文宪法和不成文宪法是英国宪法学家提出的一种宪法分类。关于成文
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
投资项目决策分析与评价的基本要求包括贯彻落实科学发展观、资料数据准确可靠和()
最新回复
(
0
)