题目： Linda works hard, and ____. [ ]A. so does her brother B. so did her brotherC. her brother do soD. her brother did so 答案： 答案：A
题型：单项选择题 食管壁包括()A．粘膜层、粘膜下层、肌层、浆膜层B．粘膜层、粘膜下层、肌层、固有层C．粘膜层、粘膜下层、肌层、外膜层D．粘膜层、粘膜肌层、肌层、浆膜层E．粘膜层、粘膜肌层、肌层、纤维层 查看答案
