中国研究人员在西藏自治区日喀则市南岭县的一处考古遗址发现了3000多年前的牛奶残留物，表明当地人在几千年前就食用了牛奶，西藏自治区文物保护研究所和其他研究所发表在《科学布尔》杂志上

银河系中数十亿颗恒星之间的巨大空间不是空的，而是充满了稀薄的星际介质。中国科学家利用500米口径球面射电望远镜（FAST）或“中国天眼”揭示了银河系星际介质前所未有的细节。在中国国家天文台科学家韩金林的带领下，该研究小组于周六在最新期刊《科学中国：物理、力学与a》上发表了他们的新发现

最近的一项研究首次在母乳中发现了微量的微塑性物质，这引起了研究人员对其对婴儿潜在健康影响的担忧。科学家表示，迫切需要进一步研究。发表在《聚合物》杂志上的母乳研究发现，由聚乙烯、PVC和聚丙烯组成的微塑性塑料都存在于包装中。这些母乳样本是在意大利罗马分娩一周后，从34名健康母亲身上采集的。微体

Astronomers revealed the first image of the supermassive black hole at the center of the Milky Way galaxy on Thursday.The image was produced

Using China's gigantic optical telescope, astronomers have discovered a record number of small compact galaxies outside the Milky Way where

One day, a poor boy who was trying to pay his way through school by selling goods door to door found that he only had one dime left. He was hungry so he decided to beg for a meal at the next house. However, he lost his nerve when a lovely y

    A country maid was walking along with a can of milk upon her head，when she fell into the following train of reflections."The money for which I shall sell this milk will enable me to increase my stock of eggs to three hundred，These

One day, a poor boy who was trying to pay his way through school by selling goods from door to door found that he had only one dime left. He was hungry so he decided to beg for a meal at the next house.However, he lost his nerve（勇气，神经