首页
登录
职称英语
[originaltext]W: Ok, last night you were supposed to read an article about huma
[originaltext]W: Ok, last night you were supposed to read an article about huma
游客
2023-09-11
38
管理
问题
W: Ok, last night you were supposed to read an article about human bones. Are there any comments about it?
M: Well, to begin with, I was surprised to find out there was so much going on in bones. I always assumed they were pretty lifeless.
W: Well, that’s an assumption many people make. But the fact is 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: Ok. So can you tell us how the bones repair themselves?
M: Sure. See, 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. 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. And this can cause real problems. It can actually 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 ceils work, maybe they can find a way to make sure the second group of cells completely fills the hole in the bone tissue ever time. That’ll prevent the disease from every occurring.
选项
A、To learn how to prevent a bone disease.
B、To understand differences between bone tissue and other tissue.
C、To find out how specialized bone cells have evolved.
D、To create artificial bone tissue.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3005031.html
相关试题推荐
[originaltext]W:Hi,Jack.Tomorrow’sthebigday!Youmustbeexcitedaboutg
[originaltext]W:Hi,Jack.Tomorrow’sthebigday!Youmustbeexcitedaboutg
[originaltext]W:Hi,Jack.Tomorrow’sthebigday!Youmustbeexcitedaboutg
[originaltext]Theworld’sfirstcompletelyautomaticrailwayhasbeenbuilt
[originaltext]Afableisashortstorywhichisnottrue.Itisastorytha
[originaltext]Afableisashortstorywhichisnottrue.Itisastorytha
[originaltext]W:Hi,Mark!How’sitgoing?M:Well,notsogreat.W:What’swro
[originaltext]W:Hi,Mark!How’sitgoing?M:Well,notsogreat.W:What’swro
[originaltext]M:Hello.W:Hello,Sam.ThisisPaulaHanson.Sorrytobotheryo
[originaltext]M:Hello.W:Hello,Sam.ThisisPaulaHanson.Sorrytobotheryo
随机试题
ThomasMore’s______isregardedastheforerunnerofthephilosophicalfantasy
[originaltext]M:Doyouknowanyonewhohasasparebookshelf?Ijustdon’tkno
WhenAkiyamaToyohiro,Japan’sfirstastronaut,completedhisstintinspace,he
Thehousingpriceinbigcitiesis______,butstillmanyyoungpeoplewouldrat
WorldExpoisthelargestthemeexhibitionwheretheorganizerandparticipa
[originaltext]Qualitiesofarelationshipsuchasopenness,compassionandm
患者恶寒,发热,头项强痛,身体疼痛,无汗,脉浮紧,或见气喘的治法是()A.
上述化合物属于黄酮醇的是A.矢车菊 B.黄芩苷 C.橙皮苷 D.儿茶素
在消化道经过酶代谢使无效构型转化成有效构型的药物是()。A.吡罗昔康 B.布
设置道路立体交叉的条件有( )。A.快速道路(V≥80km/h)与其他道路相交
最新回复
(
0
)