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Mosquitos began biting humans more than a million years ago | An analysis of 38 modern mosquitoes’ DNA suggests an ancestral mosquito species developed a preference for feeding on early humans between 2.9 and 1.6 million years ago,
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行政执法监督机构对发现的问题能够当场纠正的，应当督促有关行政执法机关立即纠正。