空中英语教室07年1月文章

这可是最短的一篇了……难度是中级，希望适合你。

Chocolate: The Smart Treat
Chocolate lovers know that eating chocolate makes them happy. Now it turns out that eating chocolate may also make them smarter.
Dr. Bryan Raudenbush recently conducted a study to see how eating chocolate affects people's brains. The U.S. researcher knew that chocolate contained several stimulants. But he wasn't sure how those stimulants actually affected chocolate eaters.
To find out,Raudenbush had a group of volubteers eat 85 grams of milk chocolate.He asked another group to eat no chocolate at all. After 15 minutes, he tested their memory and their ability to solve problems.
The group that ate milk chocolate had higher scores. They were able to remember more words and pictures than the group the did not eat chocolate. Raudenbush concluded that the stimulants in chocolate increased mental alerness.
Of course, eating chocolate doesn't guarantee you'll pass every test. Y