首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Bones become weaker and break easily. B、Bone material changes with time. C、The back bones press closer together. D、Cushions be
A、Bones become weaker and break easily. B、Bone material changes with time. C、The back bones press closer together. D、Cushions be
admin
2015-07-13
52
问题
When we say older people shrink, we don’t mean they become tiny enough to fit in your pocket! We just mean that it’s common for older people to become a little shorter over time. It isn’t dramatic or sudden. It takes place over years and may add up to only an inch or so off of their adult height.(19)This kind of shrinking can’t be reversed, although people can slow or stop this process. But why does shrinking happen at all?
Gravity, the force that keeps your feet on the ground, takes hold, and the disks, or cushions between the bones in the spine, get compressed over time.(20)The back bones end up pressing closer together, which makes a person lose a little height and become shorter.
Another reason why some older people shrink is because of the weakening of the bone which occurs when the bone is broken down and not enough new bone material is made. Over time, the bone is said to be lost because it’s not being replaced. Bones become smaller and weaker and can easily break if someone with this problem is injured.
Older people, especially women, who generally have smaller and lighter bones to begin with, can get small breaks in bones that are called compression fractures.(21)These breaks cause collapse of the back bones and over time the person can become stooped.
19. What do we know about the shrinking process of older people?
20. What is the main reason for people’s becoming shorter?
21. How do people become stooped?
选项
A、Bones become weaker and break easily.
B、Bone material changes with time.
C、The back bones press closer together.
D、Cushions between bones break down.
答案
C
解析
转载请注明原文地址:https://jikaoti.com/ti/FL3FFFFM
0
大学英语四级
相关试题推荐
Averyimportantworldproblemistheincreasingnumberofpeoplewhoactuallyinhabitthisplanet.Thelimitedamountoflanda
Mostofus【B1】______takingcertainthingsforgranted.Wetendtoassumethatexpertsand【B2】______leaderswilltellus"thetru
Mostofus【B1】______takingcertainthingsforgranted.Wetendtoassumethatexpertsand【B2】______leaderswilltellus"thetru
OneofthestrangestandmostfascinatingthingsaboutScotlandistheLochNessMonster.Somepeoplebelieveinthemonster’s【B
A、Heknowsverylittleaboutmusic.B、Heisamemberofalargeorchestra.C、HewantsMichaeltobeagreattrumpetplayer.D、He
Sportsandgamesmakeourbodiesstrong,【B1】______gettingtoofat,andkeepushealthy.Butthesearenottheironlyuse.Theyg
Howmenfirstlearnedtoinventwordsisunknown;inotherwords,theoriginoflanguageisa【B1】______.Allwereallyknowist
A、Becausethestudentswillhavealectureuntilfouro’clock.B、Becausethestudentswillbeshowntoalectureuntilseveno’c
Luoyangisaprefecture-levelcityinwesternHenanprovinceofCentralChina.ItborderstheprovincialcapitalofZhengzhouto
随机试题
VisualFoxPro6.0是一种关系型数据库管理系统,所谓关系是指()。
克罗恩病的溃疡特点是
间接血凝试验阳性
矩阵式组织结构的缺点是()。
按道氏理论的分类,趋势分为()等类型。
根据人类行为模式,人的行为产生于()。
通常企业资金成本最高的筹资方式是()。
长期平均成本曲线呈U形的原因与()有关。
在一项经典研究中,研究者选定出生后2个月、5个月和8个月三个年龄段的儿童,把毛巾(刺激变量)分别放在他们的脸上,以考察不同年龄儿童的反应。这种研究方式属于()。
【B1】【B7】
最新回复
(
0
)