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
2024-02-14
6
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 break down bone tissue.
B、They defend the bone against viruses.
C、They connect the bone to muscle tissue.
D、They prevent oxygen from entering the bone.
答案
A
解析
细节题。从短文中The first group goes to an area of the bone that needs repair.This group of cells produce the chemical that actually breaks down the bone tissue,and leaves a hole in it.可知第一组特殊细胞的功能是“产生能破坏骨组织,在骨组织中空留一个洞的化学物质”,A选项正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3451373.html
相关试题推荐
[originaltext]InmanyAmericanuniversitiesthetotalworkforadegreecon
[originaltext]InmanyAmericanuniversitiesthetotalworkforadegreecon
[originaltext]RobertEdwardswasblindedinanautomobileaccidenttrineye
[originaltext]RobertEdwardswasblindedinanautomobileaccidenttrineye
[originaltext]RobertEdwardswasblindedinanautomobileaccidenttrineye
[originaltext]Guidedogsaretrainedforthepurposeofguidingablindper
[originaltext]Guidedogsaretrainedforthepurposeofguidingablindper
[originaltext]Reporter:So,David,youworkforacompanythatmakesdyesforp
[originaltext]W:Isthisthecomplaintdepartment?I’dliketospeaktothebos
[originaltext]W:Isthisthecomplaintdepartment?I’dliketospeaktothebos
随机试题
AT&Tisthenameofa/n______.A、steelcompanyB、telephoneandtelegraphcompany
个人健康档案的内容包括哪些呢?
属于肾病综合征典型临床表现的是A:尿急、尿频、尿痛 B:24小时尿蛋白定量>3
普通高中课程由以下三个层次构成()。 A.学习领域 B.学习学科 C.学习
A.处3年以下有期徒刑、拘役、管制或者罚金 B.处3年以下有期徒刑、拘役、管制
在体温下能软化并可缓慢溶解于分泌液中的栓剂基质是A.半合成山苍子油酯 B.甘油
以下关于评定量表叙述错误的是A.评定量表是由主试者进行评定的量表 B.多是在一
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
高程划分为()A.绝对高程 B.相对高程 C.水平距离 D.误差
最新回复
(
0
)