首页
登录
职称英语
[originaltext]W: Ok, last night you were supposed to read an article a bout hum
[originaltext]W: Ok, last night you were supposed to read an article a bout hum
游客
2023-07-14
9
管理
问题
W: Ok, last night you were supposed to read an article a bout 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 them selves.
W: Ok. So can you tell us how the bones repair them selves.
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, be cause 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 cells work, maybe they can find a way to make sure the second group of cells completely fills the hole in the bone tissue every time. That’ll prevent the disease from ever occurring.
选项
A、They aren’t sure how these cells work.
B、They have difficulty identifying these cells.
C、They’ve found similar cells in other species.
D、They’ve learned how to reproduce these cells.
答案
A
解析
观点题。从对话中In fact,the scientists who study human bones don’t completely understand it yet.,我们可推知科学家对此也不是很确定,A正确。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2835108.html
相关试题推荐
[originaltext]Togetadriver’slicense,youmusttakeaseriesoftests.T
[originaltext]JohnLennon,oneoftheBeatles,wasmurderedjustbefore11
[originaltext]JohnLennon,oneoftheBeatles,wasmurderedjustbefore11
[originaltext]The20thWinterOlympicshavejustendedinTurin,Italy.But
[originaltext]W:Hi,Mark.Ididn’tknowyoucouldpaint.M:Well,I’mjustlea
[originaltext]W:Hi,Mark.Ididn’tknowyoucouldpaint.M:Well,I’mjustlea
[originaltext]W:Hi,Mark.Ididn’tknowyoucouldpaint.M:Well,I’mjustlea
[originaltext]A:8734059.B:MayIspeaktoThomasNelson?A:ThisisThomassp
[originaltext]A:8734059.B:MayIspeaktoThomasNelson?A:ThisisThomassp
[originaltext]M:Yes,Mrs.smith,whatcanIdoforyou?isittherefrigerator
随机试题
Medicalresearchatthecellularlevel,______researchontheimmunesystem,has
Sinceyourteacherhas________thetimeforatalkwithyou,youmustmakesuret
股东财富最大化目标和企业价值最大化目标通常都只适用于上市公司。()
二极管按结构形式不同可分为点接触型和()两类。A.面接触型 B.直线型 C.
黄山位于安徽省南部黄山市境内,()为黄山三大主峰。A.莲花峰 B.峻极峰 C
佛教三方佛(横三世佛)指的是()。A.药师佛 B.释迦牟尼佛 C.燃灯佛
关于遗传性出血性毛细血管扩张症说法错误的是A.常染色体显性遗传B.主要病理缺陷是
培训需求的主体按岗位划分,可以分为()。A.新员工 B.基层人员
根据《建设工程工程量清单计价规范》(GB50500——2013),当实际增加的工
连带责任保证的保证人与债权人未约定保证期间的,债权人有权自主债务履行期届满之日起
最新回复
(
0
)