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
2024-06-05
4
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、They have difficulty identifying these ceils.
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
转载请注明原文地址:https://tihaiku.com/zcyy/3621296.html
相关试题推荐
[originaltext]Normallyastudentmustattendacertainnumberofcoursesin
[originaltext]Normallyastudentmustattendacertainnumberofcoursesin
[originaltext]TheUnitedKingdomwillseekaclosertiewithChinainitsb
[originaltext]Someanimalsremainandstayactiveinthewinter.Theymust
[originaltext]Someanimalsremainandstayactiveinthewinter.Theymust
[originaltext]M:I’mgoingtotalktoyounowaboutthesuffragettemovement.W
[originaltext]W:I’vegottomakeaphonecall.Thereisaphone-boxoverthere
[originaltext]W:I’vegottomakeaphonecall.Thereisaphone-boxoverthere
[originaltext]W:Ihearyou’reworkingasamarketsurveyorthissummer.It’sg
[originaltext]W:Ihearyou’reworkingasamarketsurveyorthissummer.It’sg
随机试题
ThefollowingtwoexcerptsareabouthukoureforminChina.Likeaninternal
关于控制图,下列说法有误的是( )。A.极差控制图属于计数值控制图 B.控制
下列关于建筑物防雷类别的划分中,正确的是()。A.烟花爆竹库房应划分为第二类防
腹胀满,无压痛,扣之作空声,见于A.积聚 B.气胀 C.内痈 D.痞满
按照《金融产品和服务零售领域的客户适当性》给出的定义,投资者适当性需要考虑中间人
定基发展速度等于相应各个环比发展速度的连乘积,所以定基增长速度也等于相应各个环比
对处于衰退行业的企业进行的贷款中,短期贷款更为安全。()
泥质防水层检测项目包括( )试验。A.强度 B.压实度 C.渗水 D.冲
统计推断中,第一类错误和第二类错误均有可能发生,若要使这两类错误都减小,则(
男性,55岁。反复ALT升髙15年,近5年出现上腹持续隐痛,纳差,此次因呕鲜血
最新回复
(
0
)