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1.某班有學生49人,其中男生有24人,男生占全班人數的幾分之幾?女生占全班人數的幾分之幾?49-24=25答:男生占四十九分之二十四,女生占四十九分之二十五.米,第三段長多少米?2.有一個游泳池,長25米,寬…
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