Monga wophunzira wa PCB (Physics, Chemistry ndi Biology), mutha kuganiza kuti ukadaulo wanu wamaphunziro ndi malo okhudzana ndi sayansi okha. Ndipo, ndiye mutha kudabwa ngati mutha kuchita uinjiniya. Yankho ndi - inde, mungathe! Zachidziwikire, uinjiniya umafunika kudziwa masamu ndi c...
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