首页
登录
职称英语
[originaltext]W: You’ve read an article about human bones. Are there any commen
[originaltext]W: You’ve read an article about human bones. Are there any commen
游客
2023-08-20
44
管理
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’tcompletely 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.[15] That’ll prevent the disease from ever occurring.
12. What are the two speakers mainly talking about?
13. What is the function of the first group of specialized cells?
14. What does the woman say about scientists who study the specialized cells in human bones?
15. What benefit will it bring if scientists find out what makes the specialized cells work?
选项
A、It breaks down the bone tissue.
B、It produces the new tissue.
C、It fills in the bone holes.
D、It completely repairs the bones.
答案
A
解析
在谈论骨骼的两个不同的特殊细胞群时,女士指出第一个细胞群能够产生一种化学物质,破坏骨组织.并且在上面留下一个洞。故选A。
转载请注明原文地址:https://tihaiku.com/zcyy/2941198.html
相关试题推荐
[originaltext]AmericanvisitorstoEasternAsiaareoftensurprisedandpuz
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]Thefamilyischanging.Inthepast,grandparents,parents,a
[originaltext]Thefamilyischanging.Inthepast,grandparents,parents,a
[originaltext]M:I’msotired,Ican’tseestraight.W:You’vebeentiredalot
[originaltext]M:I’msotired,Ican’tseestraight.W:You’vebeentiredalot
[originaltext]W:Haveyouevervisitedaredwoodforest?Irecentlyhadachanc
[originaltext]W:Haveyouevervisitedaredwoodforest?Irecentlyhadachanc
[originaltext]M:I’mlookingforanunfurnishedtwo-bedroomapartment,butall
随机试题
Thedifferencebetweenaliquidandagasisobvious【C1】______theconditions
[originaltext]M:Lucyistakingsuchaheavyloadofclassesthissemester.Iw
保险公司的偿付能力监管在我国的保险监管体系占有重要地位,自2003年中国保监会发
招标投标法关于开标程序,说法正确的是( )。A.开标由招标人主持,邀请所有投标
关于羊齿状结晶和椭圆体叙述正确的是A.羊齿状结晶可用于胎膜感染的确诊 B.孕激
颅内压正常值为()。A.0.2~0.6kPa(20~60mmH2O) B.0
薪酬调查内容包括调查员工对( )、薪酬福利的发放方式等的满意度。A.薪酬福利水
从银行管理者的角度看,经济资本主要用于衡量银行的()。A.极端损失 B.
属于温室效应气体是A.CO B.SO C.HS D.HC1 E.CH
综合布线系统设计中,对于信道为OF-2000的1300nm多模光纤的衰减值,下列
最新回复
(
0
)