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
2023-08-20
50
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] 【C6】
选项
答案
C
解析
本文的第二、三自然段介绍了Waki和Paton博士对于高血压成因的新发现:JAM一1基因,空格后面的内容是:专家们认为高血压是由肾引起的,很显然,这是人们以前的看法,备选副词中的previously“以前”符合句意,故C)为答案。
转载请注明原文地址:http://tihaiku.com/zcyy/2943152.html
相关试题推荐
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
Thefirststeptodefeatinganenemyistopindownhisexactidentityandh
随机试题
America’seconomicrecoveryremainsuncomfortablyweak.Thelatestdatasho
CarcrashesaretheleadingcauseofinjuryanddeathamongU.S.children,a
AstrologyA)Astrologyisthestudyofhowthesun,themoon,planets,a
Dinosaurs,saber-toothtigersandthedodobirdarefamousexamplesof(1)__
用相乘法求安全事件发生的可能性。
免疫活性细胞包括()A.单核细胞 B.NK细胞 C.T细胞 D.B细
排列出院病历,体温单的上面是A.检验报告单 B.医嘱单 C.病史及体格检查
在不同药代动力学模型中,计算血药浓度与时间关系会涉及不同参数非房室分析中,平均滞
影响着员工的工作态度动机有()。A.两个要素:努力的水平,即行为的努力程度;坚
下列电气设备的安装要求,不正确的是()。A.所有配件应采用镀锌制品 B.
最新回复
(
0
)