李宝珍并不知道爬满住家的是臭虫（bed bugs，又称床虱），她咬定那是“不会飞的萤火虫”。臭虫一般寄生在床铺、家具缝隙或衣物中，夜间吸血，会引起皮肤瘙痒和过敏，但不会传播严重疾病。

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ABUJA, Nov. 20 (Xinhua) -- The number of people died from a Lassa fever outbreak in Nigeria, Africa's most populous country, has risen to 177 since the start of this year, authorities said Thursday.

China's second Qinghai-Tibet Plateau scientific expedition has yielded significant practical outcomes, with its top 10 ...

其实近年来流行的“轻断食”，背后的道理可能就在这里。不需要什么复杂的操作，让身体简单地保持适度饥饿状态，不仅能调动脂肪、稳定血糖，还能给身体来一次“大扫除”，清除那些废旧代谢物。