Question

Glaucoma（青光眼）is a major cause of blindness around the world, especially in developing countries. The World Health Organization says glaucoma is a greater public health challenge than cataracts（白內(nèi)障）, because the blindness caused by the latter can be cured after operations.

Glaucoma is a disease that makes people around the world lose their sight, and they usually don’t even know they have the disease until it has permanently destroyed at least 40 percent of their sight. The process is usually so painless and subtle（不明顯的）, so people don't notice it. Actually, the simplest medical test can discover it.

“It is the leading cause of blindness in the United States. In Hispanics and in African-Americans, it’s the second leading cause of blindness and so is the case in the Chinese and Indians.” said Dr. Alan Robin, a specialist in treating glaucoma. “The glaucoma we see in sub-Saharan Africa is a much more aggressive blinding disease than the glaucoma we see in Americans or even African- Americans in-the United States.” he said．     ．

Dr. Eric Fleischer also sees these differences at Medstar Washington Hospital Center. “Pretty much anybody who has ancestors in Africa has an increased chance of developing glaucoma.” Age is another thing that may lead to glaucoma, although people of all ages can get it.

Glaucoma is a group of diseases that commonly produce pressure in the eye. An eye is sort of like a watch. And behind the face of the watch, liquid is made. It goes through your pupil（瞳孔）and into the front of the watch between the face and the crystal．There's an area around the edge of the watch that drains（使排出）the liquid. When that drain is blocked, the liquid can't leave the eye as fast as it is produced. The rising pressure within the eye damages and eventually kills the optic（視覺的） nerve. The result is blindness.

Fortunately, if caught early, glaucoma can be controlled. Glaucoma is not curable. But as  researchers worldwide lean more about it, they grow more hopeful that glaucoma can one day be cured or even prevented.

1.In which country is glaucoma the biggest danger to people’s sight?

A．In China           B．In India           C．In the USA         D．In Japan

2.What do the underlined words “these differences”（in Para 4 ）refer to?

A．The differences in regions（地區(qū)）         B．The cultural differences

C．The differences in age                    D．The physical differences

3.From the passage, we can learn that,            .

A．It is hard for medical tests to discover glaucoma

B．People in developed countries hardly develop glaucoma

C．Glaucoma only causes blindness among old people

D．The research on glaucoma is still going on worldwide

 

Answer 1

【答案】

1.C

2.A

3.D 

【解析】

試題分析：文章介紹了青光眼的形成和危害，以及不同地區(qū)青光眼的危害的差異。

1.細(xì)節(jié)題：從第三段的句子：“It is the leading cause of blindness in the United States. 可知在美國青光眼對人們的視力是最大的威脅。選C

2.推理題：文章第三段主要講了青光眼地區(qū)分布的差異。第四段里面的differences就是“地區(qū)差異”。選A

3.細(xì)節(jié)題：從最后一段的句子：But as  researchers worldwide lean more about it, they grow more hopeful that glaucoma can one day be cured or even prevented.可知對青光眼的研究還在全世界進(jìn)行。選D

考點(diǎn)：考查健康類短文

點(diǎn)評：：文章介紹了青光眼的形成和危害，以及不同地區(qū)青光眼的危害的差異。本文細(xì)節(jié)題居多，答題時(shí)在文章找到對應(yīng)的地方，用筆進(jìn)行標(biāo)記，這有利于后期有時(shí)間檢查時(shí)可以立刻找到答案的位置。仔細(xì)理解作者所講的意思，再結(jié)合選項(xiàng)，通過排除法和自己對全文的把握，選出正確答案。