Some people think that they{#blank#}1{#/blank#}( get) ill if they use their brains（大脑）too much.  It is not true.  Through many researches, scientists{#blank#}2{#/blank#}( show) us that the more you use your brains, the better they{#blank#}3{#/blank#}( be), and the wiser you will become.

    Of course, if you want to keep your mind clear and be energetic（充满活力的）, you{#blank#}4{#/blank#}( take) a proper rest and study properly.  To the teenagers,{#blank#}5{#/blank#} ( use) their brains in the morning is good for their health.

    There are many ways {#blank#}6{#/blank#}( rest). One is a peaceful rest.  Sleep is a peaceful rest. Another is an active rest. For example{#blank#}7{#/blank#}( take) a walk outdoors, do morning exercises every day{#blank#}8{#/blank#}( change) the way of the brains' activities（活动）is also a good way to rest.In everyday life{#blank#}9{#/blank#}( eat) some eggs, meat, fresh vegetable and fruit is also good for the brains.{#blank#}10{#/blank#} (wish) you a wise man and a happy life.