首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断 :如果该句提供的是正确信息,请选择 A;如果该句提供的是错误信息,请选择 B ;如果该句的...
下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断 :如果该句提供的是正确信息,请选择 A;如果该句提供的是错误信息,请选择 B ;如果该句的...
admin
2020-12-24
53
问题
下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断 :如果该句提供的是正确信息,请选择 A;如果该句提供的是错误信息,请选择 B ;如果该句的信息文中没有提及,请选择 C 。
Earth Rocks On
Most of the time, the ground feels solid beneath our feet. That’s comforting. But it’s also misleading because there’s actually a lot going on underground. Masses of land (called plates) slip, slide, and bump against each other, slowly changing the shape of continents and oceans over millions and billions of years.
Scientists know that Earth formed about 4. 5 billion years ago. They also know that our planet was hot at first. As it cooled, its outermost layer, called the crust(地壳) , eventually formed moving plates. Exactly when this shift happened, however, is an open question.
Now, an international group of researchers has an answer. They’ve found new evidence suggesting that Earth’s crust started shifting at least 3. 8 billion years ago. The new estimate is 1.3 billion years earlier than previous ones.
Not long before 3. 8 billion years ago, lots of asteroids(小行星)were hitting Earth, keeping its crust in a hot, melted state. After the hard crust formed, much of it sank at various times into the planet’s hot insides. There, it melted before returning to the surface.
In some places, however, the crust never sank. One of the oldest such places is in Greenland, in an area called the Isua supracrustal (上地壳) belt. The rocky crust there is between 3. 7 and 3. 8 billion years old. The belt was once part of the seafloor, but now it is exposed to air.
The researchers recently took a close look at the Isua supracrustal belt. They noticed long, parallel cracks in the rock that have been filled in with a type of volcanic rock.
To explain this structure, the scientists propose that tension in the crust caused the seafloor to crack open long ago. Hot, liquid rock, called magma (岩浆) , flowed up slowly from deep inside Earth to fill the cracks. Finally, the whole area cooled, forming what we see today.
That explanation, plus chemical clues inside the rock, suggests that the Isua supracrustal belt was once part of a plate under the ocean, beginning around 3. 8 billion years ago.
The formation of the Isua supracrustal belt is thought to have started about 3. 8 billion years ago.
选项
A Right
B Wrong
C Not mentioned
答案
A
解析
文章最后一句话提到“Isua上地壳带开始形成于约38亿年前”,所以题干表达的意思是正确的,答案为A。
转载请注明原文地址:https://ti.zuoweng.com/ti/L99QKKKQ
相关试题推荐
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorintheHou...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorintheHou...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorintheHou...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 TheToughGrassth...
随机试题
证券金融公司是中国证监会根据国务院的决定,批准设立专司转融通业务的股份有限公司,
主要的区位理论包括()。
现代中医借助西医的物理检验手段,提高传统的\"望-闻-问-切\"的诊断准确性,这样的
中国共产党在社会主义初级阶段基本路线的简明概括是()。 A.始终不渝地坚持改
在全国重点文物保护单位的保护范围内进行爆破、钻探、挖掘作业的,必须经()批准。
甲上市公司股东大会通过决议发行新股,发行公告中表明公司所募集资金主要是为了进军房地产行业,资金募集后,公司发现房地产行业已经饱和,于是打算将募集到的资金改...
细水雾灭火系统按照分配管网中流动介质的压力,可以分为( )。A.高压系统B.临时高压系统C.中压系统D.低压系统E.稳压系统
股权市场被认为是资本市场的一部分。()
共用题干 第一篇CanGeneTechnologyMakeHumanSmarter?Almosteveryonewantstoget...
在当代国际货币体系中处于核心地位的机构是()A.世界银行B.国际清算银行C.金融稳定委员会D.国际货币基金组织