People at risk of a heart attack or stroke could benefit from blood-pressure-lowering drugs even if their blood pressure is considered in the normal, healthy range. If such drugs were offered to people with cardiac(心脏的) risks regardless of their blood pressure at the beginning of treatment it could save millions of lives, researchers in Oxford University found.
For the study, the team analyzed more than 120 medical trials including around 600,000 people conducted over two decades, saying their findings are a call for an urgent review of existing blood pressure treatment guidelines."Our findings clearly show that treating blood pressure to a lower level could greatly reduce the risk of cardiovascular disease, if widely conducted,"said study lead author Kazem Rahimi.
High blood pressure has long been identified as a factor in higher risks of heart disease and strokes, and makes more than a billion people around the globe intorment— including one out of three U.S. adults.
Blood pressure is recorded in millimeters of mercury (mmHg) as two numbers in a ratio:"systolic"pressure inside the arteries(动脉)when the heart beats as the top number, and"diastolic(舒张的)"pressure between heartbeats, as the heart rests and is refilled with blood."Normal"blood pressure is considered at 120/80 or below, and is considered"high"at 140/90 or above, according to the American Heart Association. The researchers said their study showed that for every reduction in systolic pressure of 10 mmHg, the risk of heart attacks was reduced by a fifth and that of a stroke around a quarter.
Some experts said they thought the study’s findings were important butdid offer some warnings."One important warning is that not everyone will be able to tolerate having their blood pressure reduced to low levels, and there is a need to balance possible drug side effects and likely benefits,"Smeeth said.
32.What do the findings indicate?
A.Normal blood pressure doesn’t mean a healthy body.
B.The existing blood pressure treatment is useless.
C.High blood pressure is the first health killer.
D.High blood pressure causes many diseases.
33.What does the underlined word"torment"(in Paragraph 3) mean?
A.Tolerance. B.Debt. C.Pain. D.Despair.
34.What is the function of Paragraph 4?
A.To teach how to measure blood pressure.
B.To compare high and normal blood pressure.
C.To explain the factor in heart attacks and strokes.
D.To show some diseases are related to blood pressure.
35.What can be inferred from Smeeth’s words?
A.He thought less of the findings.
B.Reducing blood pressure isn’t safe for everyone.
C.Most experts disagree with the findings.
D.Drug side effects are bigger than benefits.
ACDB
什么是历史文化类阅读:
本类题型常用的方式是夹叙夹议。叙述的目的是为了议,所以要把握其议才是主要方面。阅读这类文章,先弄清其引入的话题,再弄清里面人物对其不同的看法,然后理解作者本身对话题的观点看法或思考。
历史文化类阅读技巧:
【题型说明】历史文化类阅读理解文章属高考常选材料之一。这类文章常涉及历史、文化、法制、宗教等方面的文学艺术、发明创造、文化遗产保护、宗教与文化、风俗与习惯、道德与法制、中外文学名著节选、等等。这类材料的命题点往往落在主旨大意题、事实细节题上。
【答题方法】在做这类阅读理解题时,我们应注意以下几个方面:
1、采用先题后文:先读题目,再带着问题读文章。这类阅读理解文章相对来说事实细节题稍多一点,如果带着问题读文章,有利于我们抓细节。
2、先做细节题。因为做完了局部性的事实细节题后,自然会加深我们对文章的理解,这样更有利于做主旨大意题。
3、重点敲定主旨题。主旨大意题提问的形式主要有两大类:一类是Main idea型;一类是Topic或Title型。
在解答这类试题时应注意以下几点:
a.读首句抓大意。
文化教育类阅读理解文章多采用说明文、议论文体裁,而这类文章大都采用文章段落的中心,即主题句在文章开头。因此,要寻找这类文章的主旨大意就需要研究文章的首句。
b.读尾句抓大意。
有时这类文章的主题句安排在文章的结尾,作为对全篇的总结。
c.读首段抓大意。
有些文章或段落的开头和结尾部分都有主题句。这种结构是为了突出主题思想而使用两次点题的写作方法。这两个主题句在句子结构和用词上有所不同,而且在内容上前句和后句也不重复。
d.从段落中抓大意。
有些文章或段落的主题句在文章中,这种文章或段落往往以一句话或几句话引出要表达的主题,在主题句出现后,再举例子陈述细节或继续论证。
e.归纳要点抓大意。
有些文章或段落无明显的主题句,只是暗示性地体现主题。这就要求同学们在阅读过程中根据文中所叙述的事实或线索来概括总结主旨大意。
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