2008 In 1784,five years before he became president of the United States, George Washington, 52, was nearly toothless. In 1784, five years before he became president of the United... 2023年8月7日考研英语真题109评论argue observe 阅读全文
Could you recover from illness … using your own stem cells? 能够用你自己的干细胞治疗疾病吗? recover;re 回来 再 + cover 覆盖;回来重新盖上,引申词义重新获得、... 2023年3月26日考研英语听力276评论scale solution 阅读全文