A. 请阅读下面短文, 根据语篇内容, 在空白处填入恰当的单词, 使短文通顺、连贯。每空一词It's hard to turn down junk food. However, eating too much junk food {#blank#}1{#/blank#} harmful to your body. "For young people aged {#blank#}2{#/blank#} 10 and 19, junk food has a bad influence on their abilities of thinking, learning and memorizing, "said Amy Reichelt, a brain expert.
Reichelt reviewed over 100 studies about how poor food choices can influence teen brains. She discovered that teenagers who had a high-fat diet performed worse on memory tests {#blank#}3{#/blank#} those who ate a normal diet.
She also found teenagers were more interested {#blank#}4{#/blank#} foods with a lot of fat and sugar. The prefrontal cortex(前额皮质)of the brain is the part. {#blank#}5{#/blank#} helps us develop the ability to control ourselves. However, this part doesn't fully develop {#blank#}6{#/blank#} we are in our early 20s.
{#blank#}7{#/blank#} the same time, teen brains get more excited from rewards(奖励). Eating junk food makes teenagers feel good. Therefore, they can hardly turn down junk food {#blank#}8{#/blank#} they know it is not good for their health.
So, what's the best way to say no to junk food? Researchers advise people to {#blank#}9{#/blank#}. That is because when we exercise, {#blank#}10{#/blank#} brains grow and become better able to make smart decisions.
