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
2024-04-23
41
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/3567615.html
相关试题推荐
[originaltext]Birthorderwithinfamilieshaslongsparkedsiblingrivalry,
[originaltext]Birthorderwithinfamilieshaslongsparkedsiblingrivalry,
[originaltext]Wherewechoosetolivecanhaveahugeimpactonourlife.L
[originaltext]M:Howdoyouthinkpeoplegettheirpersonalities?W:(12)Ithin
[originaltext]M:Howdoyouthinkpeoplegettheirpersonalities?W:(12)Ithin
[originaltext]W:So,tellmeaboutyournewhouse.Howisitdifferentfromyou
[originaltext]W:So,tellmeaboutyournewhouse.Howisitdifferentfromyou
[originaltext]W:So,tellmeaboutyournewhouse.Howisitdifferentfromyou
[originaltext]M:Mara,wherewereyouyesterdayevening?Iexpectedtoseeyou
[originaltext]M:Mara,wherewereyouyesterdayevening?Iexpectedtoseeyou
随机试题
新中国成立70年来,中国的人权事业取得了举世瞩目的成就。1949年新中国成立前,中国的人均GDP仅达27美元,人均预期寿命35岁,人均受教育年
Thereismuchdiscussiontodayaboutwhethereconomicgrowthisdesirable.A
软件过程管理一般包括:启动和范围定义;软件项目计划;( );评审和评价;关闭和
油浸变压器启动投运验收,冲击合闸试验后,在空载情况下进行有载开关操作试验,远方控
公共选择理论的基本特征包括()。A、理性经济人假定B、作为交易的政治C、方法
根据中华人民共和国2016年国民经济和社会发展统计公报公布的数据显示,2016年
(2018年真题)假设某银行贷款客户优良且需求量大,但存款业务一直徘徊不前,资产
下列选项属于人格权的是()。A.姓名权 B.肖像权 C.生命健康权
加气混凝土砌块的竖向灰缝宽度不应超过为( )mm。A.5 B.10 C.1
施工过程中必须发生,但在投标时很难具体分项预测,又无法单独列出项目内容的措施项目
最新回复
(
0
)