1 . You may have noticed some changes in your grandparents. As they get old, they start   ______things. And the older they get, the _______things they will forget. For example, they may not be able to_______ where they left their glasses, or they may forget the names of their close friends. If you don’t want to ______ memories very early, put down your sandwiches. A new study published in a science magazine shows that cutting calories can ______ people’s (especially the old people’s) memory.

Calorie restriction(热量限制) let lab animals live longer. And these ______ animals seemed to be ______. But it wasn’t clear _______it was the same with people.

In the latest______ , scientists asked 50 elderly women to ______ the number of calories they consumed(吃，喝) by a third. After three months, the _______found that the women were not only _____ , but they were better than they had been at_______ words—they remembered more words than ever, which suggested that keeping calories under ______ could help keep the brain ___________ .

In a word, the less you eat, the more you will remember.