下面是4月19日VOA慢速听力的英文原文,供考生参考。
Hello again, and welcome to As It Is! Im Jonathan Evans in Washington.
Today on the program, we have great news for all of our listeners. By learning English in addition to your own language, you could delay or prevent many forms of mental decline! Milagros Ardin has the story.
Speaking More than One Language Could Delay Dementia
New research suggests that speaking more than one language may delay different kinds of dementia. That is, the loss of mental ability. In fact, researchers say speaking two languages appears to be more important than the level of education in defending against dementias.
A study in India examined the effect of knowing more than one language in delaying the first signs of several disorders. These included Alzheimers disease, frontotemporal dementia, vascular dementia, Lewy bodies dementia and mixed dementias.
Researchers studied nearly 650 people whose average age was 66. Two hundred forty of those studied suffered from Alzheimers -- the most common form of mental decline.
Three-hundred-ninety-one of the subjects spoke two or more languages. Investigators found the dementias began about four-and-a-half years later in those who were bilingual compared to those who spoke only one language. The level of education had no effect on the age at the first sign of dementia.
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