【題目】根據(jù)短文內(nèi)容，從短文后的選項中選出能填入空白處的最佳選項。選項中有兩項為多余選項。

The main cause of death and disability in the US

Stroke (中風(fēng)) is the main cause of death and disability in the United States. Every 45 seconds, someone in America has a stroke. 【1】 It is the nation's third leading cause of death, ranking behind diseases of the heart and all forms of cancer. The following is something more about stroke.

Definition and description of a stroke

Stroke is a type of cardiovascular disease. It affects the arteries(動脈) leading to and within the brain. A stroke occurs when a blood vessel（血管） that carries oxygen and nutrients to the brain is either blocked by a clot or bursts. 【2】 So stroke forms.

【3】

The American Stroke Association has identified several factors (因素) that increase the risk of stroke. The more risk factors a person has, the greater the chance that he or she will have a stroke. Some of these you can't control, such as increasing age, family health history, race, and previous stroke. 【4】 Factors resulting from lifestyle or environment can be improved with a healthcare provider's help.

Breakthroughs in treatment

【5】 In fact, about 600,000 people have strokes every year. For many years, there was no hope for those suffering a stroke. However, recent breakthroughs have led to new treatments. For the treatments to work, the person must get to a hospital immediately.

A. Risk factors of a stroke.

B .Warning signs of a stroke.

C. Every 3.1 minutes, someone dies of one.

D. A stroke can happen to anyone at any moment.

E. But you can change or treat other risk factors to lower your risk.

F. When that happens, part of the brain cannot get the blood and oxygen it needs.

G .The more common kind of stroke is caused by a blood clot that blocks a blood vessel in the brain.

【答案】

【1】C

【2】F

【3】A

【4】E

【5】D

【解析】

試題分析：在美國，中風(fēng)是導(dǎo)致死亡和殘疾的主要原因。本文詳細介紹了中風(fēng)這一疾病，并介紹了治療的突破點。

【1】C 前一句有Every 45 seconds，正好對應(yīng)C項Every 3.1 minutes，后一句It is the nation's third leading cause of death里面說到了死亡，正好對應(yīng)C項someone dies of one，因此答案選C。

【2】F 前一句話A stroke occurs when a blood vessel(血管) that carries oxygen and nutrients to the brain is either blocked by a clot or bursts. (當(dāng)一個血管輸送氧氣和營養(yǎng)物質(zhì)的血管被血栓或破裂阻塞時，中風(fēng)發(fā)生了。)，因此當(dāng)這種情形發(fā)生的時候，部分大腦得不到它所需的血液和氧氣，然后中風(fēng)就形成了。故此題答案為F。

【3】A 此空屬于段落標(biāo)題題，其所在的這一段主要是在說中風(fēng)風(fēng)險的一些因素。因此答案為A。

【4】E 根據(jù)前一句Some of these you can't control, such as increasing age, family health history, race, and previous stroke.說有些因素你無法改變，那肯定后面是可以改變的因素，因此正好對應(yīng)選項E，而且有一個很重要的關(guān)鍵詞But，正好前后轉(zhuǎn)折關(guān)系。故答案為E。

【5】D 后一句about 600,000 people have strokes every year，說明數(shù)字的龐大，用排除法查看剩下的選項，就不難選出選項D了，故答案為D。

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