首页
登录
职称英语
The first step to defeating an enemy is to pin down his exact identity and h
The first step to defeating an enemy is to pin down his exact identity and h
游客
2024-04-17
32
管理
问题
The first step to defeating an enemy is to pin down his exact identity and how he operates. Hypertension—chronic, abnormally raised blood pressure—causes heart attacks, strokes and a multitude of other【C1】______conditions. Around a third of Americans and Britons suffer from it. It is thus a worthy enemy and【C2】______its cause is a priority. Until now, this has mostly seemed to lie in the kidneys. But Hidefumi Waki and Julian Paton of Bristol University think they have gathered some valuable new【C3】______—by studying the brain.
In a previous experiment Dr Waki and Dr Paton had found that rodents(啮齿动物)with high blood pressure expressed some genes differently in an area of the brain, called the solitary nucleus(核子), which sets the body’s normal blood pressure level. One of these genes was called "junctional adhesion(粘连)molecule-1 " or JAM-1 for short. It is a molecule normally found in the walls of blood【C4】______that attracts clotting and immune cells—in other words, it causes inflammation. So the pair decided to look at JAM-1 in further depth.
They found that in rats with high blood pressure JAM-1 levels were raised not only in the brain but also the kidney, spleen, lungs and skeletal muscle. To find out whether this was the cause or effect of high blood pressure, they then【C5】______the JAM-1 gene into the solitary nucleus of normal rats. After two weeks, these rats suffered from higher blood pressure than rats that had not received the gene.
【C6】______, experts thought that high blood pressure was caused by the kidneys. The idea was that the kidneys failed to【C7】______the blood pressure. This then caused the lungs to make a hormone(荷尔蒙)that increases blood pressure, leading to a chain of events that raised pressure throughout the blood-vessel network. All blood-pressure-lowering drugs work by seeking to put this right. Yet blaming the kidneys cannot be the full【C8】______of what is going on, because only half the sufferers respond to blood-pressure-lowering drugs. Although these findings are【C9】______, they have far-reaching implications.
Variations in the JAM-1 gene and its expression may explain why high blood pressure tends to run in families, although it is also caused by a poor diet. The finding also shows that the brain could increase the activity of the sympathetic nerves, the part of the nervous system involved in stress response. Ultimately, the finding could hasten the development of drugs that would attack hypertension at its source, stopping its deadly【C10】______in their tracks.
A)sturdy I)explanation
B)vessels J)consequences
C)previously K)nasty
D)perseverance L)reproaching
E)nailing M)transferred
F)preliminary N)intelligence
G)sense O)accordingly
H)reconcile [br] 【C8】
选项
答案
I
解析
由下文的because only half the sufferers respond to blood-pressure-lowering drugs“因为降压药只对一半的病人有效”可推知,把根源归结于肾并不能解释所有发生的事实,故I)explanation“解释”为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3559418.html
相关试题推荐
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
随机试题
Lookatyourwatchforjustoneminute.Duringthatshortperiodoftime,th
AttheHemingwayMemorial,justpasttheSunValleyResort,itisquiet.In
表现肾小管功能持续受损的疾病是()。A.急性膀胱炎 B.急性肾盂肾炎 C.
对于非霍奇金淋巴瘤的描述,哪项正确A.脑、肝、肾等器官不发生非霍奇金淋巴瘤 B
牛磺酸含量丰富的是( )。A.贝类的肉质 B.鱼类的肉质 C.淡水产品
A.9 B.7 C.5 D.3
关于入胞跨膜转运方式的描述,下列哪一项不正确A.是大分子物质或团块进入细胞的一种
看跌期权的买方有权按执行价格在规定时间内向期权卖方()一定数量的标的物。A.
张某为甲市税务局负责管理运输行业税收的工作人员。2017年3月,张某应朋友
A.询者中心疗法 B.自由联想疗法 C.支持疗法 D.系统脱敏疗法 E.
最新回复
(
0
)