nothing lives forever,right?Wrong,Believe it or not,there are some animals that do not die,They are very simple creatures,too small to beseen without the help of a microscope.while mostanimals,including human heings,havve billions of cells in their bodies,these little never-dieanimals have only one.Each cell lives for a length of time,and then splits to form two babies.
少儿牛津英语三星口试
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