Taw qhia: Cov ntsiab lus tseem ceeb ntawm tsab xov xwm no yog los qhia txog cov txheej txheem rov ua dua tshiab uas tsim nyog rau cov khoom ua si rau cov menyuam yaus thiab cov menyuam kawm ntawv preschools ntawm cov khoom sib txawv. Thaum cov menyuam loj hlob tuaj, lawv yuav inevitably loj hlob ntawm cov khoom ua si qub, xws li cov khoom ua si sib tham sib rau cov menyuam yaus, cov khoom ua si ntoo o ...
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