民那好久不见！！自从上了班忙死了QAQ

Hints:

"I told you so". 

six-year

2,000 Chicago-area

New research on vegetables and aging gives mothers another reason to say "I told you so". It found that eating vegetables appears to help keep the brain young and may slow the mental decline. 　　On measures of mental sharpness, older people who ate more than two servings of vegetables daily appeared about five years younger than those who ate few or no vegetables at the end of the six-year study. 　　The research in almost 2,000 Chicago-area men and women doesn't prove that vegetables reduce mental decline, but it adds to mounting evidence pointing in that direction. The findings also echo previous research in women only. 　　Green leafy vegetables appeared to be the most beneficial. The researchers said that may be because they contain healthy amounts of vitamin E, which is believed to help fight chemicals produced by the body that can damage cells.
最近，一项有关蔬菜与年龄的关系的研究让母亲们更有理由说“我早告诉过你了”这句话了。该研究发现吃蔬菜似乎能帮助大脑保持年轻，同时可能延缓智力下降。 　　在这项为期六年的研究结束时，研究者发现在智力反应快慢方面，每天吃两道以上蔬菜的老人比那些很少吃或根本不吃蔬菜的同龄人大约年轻五岁。 　　尽管对芝加哥地区约两千名男女所做的研究没有证明蔬菜能够缓解智力水平的下降，但它为这一论点又提供了一条新的论据。这次的研究结果与以前只针对妇女所做的研究结果一致。 　　绿叶蔬菜似乎最有好处。研究人员认为这可能源于绿叶菜中含有大量维生素E。人体体内能够产生破坏细胞的化学物质，而维生素E能抗击该物质。