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
59
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.
It took a long time for the melted crust to become hard.
选项
A Right
B Wrong
C Not mentioned
答案
C
解析
文章第四段提到了“坚硬的地壳形成之后……”,并没有提及这个过程的时间。题干表达的意思没有出现在文章中,所以答案为C。
转载请注明原文地址:https://ti.zuoweng.com/ti/JxlQKKKQ
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。 ADoctorinthe...
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...
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
借款人申请商用房贷款,购买某知名品牌开发商商业用房,按银监会贷款支付管理规定,在
下列各项,具有\"泌别清浊\"功能的是 A.三焦 B.大肠 C.小肠 D.膀
男性,40岁,近3个月多饮、多尿,每日尿量8~10L,空腹血糖为5.6mmol/
可引起耳毒性的药物是
患者头晕、乏力、恶心呕吐、血清Na+130mol/L,血清K+4.5mol/
在雷电过电压下的绝缘配合中,已知某工程选用的550kV避雷器雷电冲击残压Ubnc为1O11kV,操作冲击残压Ubcc为827kV,计算500kv电流互感器...
维生素对人体健康具有重要作用,是维持细胞正常功能所必需的。下列关于维生素的表述正确的是:()A.机体内不能合成维生素CB.维生素根据其溶解性质分为水溶性和
某工程,监理单位承担了施工监理任务,实施过程中发生如下事件。 事件1:总监理工程师主持编写项目监理规划后,在建设单位主持的第一次工地会议上报送建设单位代...
不属于房地产经纪机构人力资源管理具有的特点的是()。A:人本性B:战略性C:合法性D:稳定性
校园欺凌是在学校内发生的儿童间的暴力、攻击行为,近年来,校园欺凌现象时常发生,作为一名学校社会工作者,针对校园欺凌现象应()。A.联络学校各有关部门,制订特