首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、They have difficulty identifying these cells. B、They aren’t sure how these cells work. C、They’ve learned how to reproduce thes
A、They have difficulty identifying these cells. B、They aren’t sure how these cells work. C、They’ve learned how to reproduce thes
admin
2020-11-04
44
问题
W: You’ve read an article about human bones. Are there any comments about it?
M: I was surprised to find out there was so much going on in bones. I always assumed they were pretty lifeless.
W: In fact, bones are made of dynamic living tissue that requires continuous maintenance and repair.
M: Right. That’s one of the things I found so fascinating about the article—the way the bones repair themselves.
W: Can you tell us how the bones repair themselves?
M: Sure. There are two groups of different types of specialized cells in the bone that work together to do it. The first group goes to an area of the bone that needs repair. This group of cells produces the chemical that actually breaks down the bone tissue, and leaves a hole in it.
W: Well said, what about the second group?
M: After that the second group of specialized cells comes and produces the new tissue that fills in the hole that was made by the first group.
W: Very good. This is a very complex process. In fact, the scientists who study human bones don’t completely understand it yet. They are still trying to find out how it all actually works. Specifically, because sometimes after the first group of cells leaves a hole in the bone tissue, for some reason, the second group doesn’t completely fill in the hole. It can lead to a disease in which the bone becomes weak and is easily broken.
M: Ok, I get it. So if the scientists can figure out what makes the specialized cells work, maybe they can find a way to make sure the second group of cells completely fills the hole in the bone tissue.[8] That’ll prevent the disease from ever occurring.
5 What are the two speakers mainly talking about?
6 What is the function of the first group of specialized cells?
7 What does the woman say about scientists who study the specialized cells in human bones?
8 What benefit will it bring if scientists find out what makes the specialized cells work?
选项
A、They have difficulty identifying these cells.
B、They aren’t sure how these cells work.
C、They’ve learned how to reproduce these cells.
D、They’ve found similar cells in other species.
答案
B
解析
女士说这种特殊细胞作用于人类骨骼的过程相当复杂,事实上,连研究人类骨骼的科学家都不能完全了解这个过程,B是该处内容的同义替换,故为答案。
转载请注明原文地址:https://kaotiyun.com/show/ZRP7777K
0
大学英语六级
相关试题推荐
A、Universitysystemsvaryfromcountrytocountry.B、Efficiencyisessentialtouniversitymanagement.C、Itishardtosaywhich
ReformandMedicalCosts[A]Americansaredeeplyconcernedabouttherelentlessriseinhealthcarecostsandhealthinsurancep
A、Whentheyaremotivated.B、Whentheyarerelaxed.C、Whentheyfeelexcited.D、Whentheyenjoyautonomy.B在录音中间部分,演讲者提到“我不会给他们太
A、Printmaterialsforvisitors.B、Studyreferentialreports.C、AskSallytomakearrangements.D、Applytothechiefexecutive.B
A、Gosailing.B、Seethelakebybus.C、Goswimming.D、Feedtheducks.A短文最后提供了一些建议,包括散步、钓鱼、帆船运动、冲浪等等。A是其中一项,故正确。举例处常考,考生要特别留意,凡听
A、MostofthenewemployeesinMcKinsey&Co.graduatefromit.B、Nearly20%oftopmanagersinAmericaarefromit.C、MBAisfo
A、Theirbusinesshoursarelimited.B、Theirsafetymeasuresareinadequate.C、Theirbankingproceduresarecomplicated.D、Theyd
A、Thebodywilltakeinmoreoxygen.B、Theheartwillbeatmorefrequently.C、Muscleswillbecometenseandthebodywillsweat
A、MajorEuropeanairlineswillgobankrupt.B、Europeanswillpaymuchlessfortraveling.C、Travelingtimebytrainbetweenmajo
A、Ahandwrittenone.B、Onethatisrevisedbythestudent.C、Onethatisoriginative.D、Onethatconformstotheinstructions.D
随机试题
________命令可以通过将草图外部的对象沿着垂直于草图平面的方向投影到草图,创建曲线、曲线串或点。
在议员选举中,曾经长期采用过复票制的国家是()
A.A型B.Ad型C.As型D.B型E.C型中耳功能正常者的鼓室压力图为
三物备急丸的组成药物是()
以下沙漠风沙层中的地下水补给项不正确的为()。
下列关于劳动关系的不同模式,表述正确的有()。
下列项目中,不违背会计核算可比性要求的有()。
采用预收款方式销售商品的,确认该商品销售收入的时点是收到预收款当天。()
政府对一些高档奢侈品和资源性消费品征收消费税,引导消费方向、节约资源、保护生态环境,这体现了财政政策的()。
某单位有A、B、C三个部门,三个部门的平均年龄依次是25岁、30岁、40岁,B、C两个部门的平均年龄是36岁,A、B两个部门的人数之比是5:4,问这个单位的平均年龄是多少?
最新回复
(
0
)