中国是世界上最古老的国家之一。
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Her home is the closest to school,so she often (走路) to school.
She plays the piano (好)than Sam does.
His (能力)in swimming was noticed by the coach.
He is a (仔细的;认真的) boy.
健康取决于食物、锻炼和足够的睡眠。
Health depends on food,exercise and .