第12题: [单项选择]下列关于B型慢性萎缩性胃炎的病变特点中正确的是() A. 胃体部黏膜弥漫性病变 B. 不发生癌变 C. 血清抗壁细胞抗体阳性 D. 常伴有恶性贫血 E. 胃窦部黏膜病变严重 参考答案:E 答案解析:慢性萎缩性胃炎主要有A型和B型。A型多发生在胃体和胃底部,属于自身免疫性疾病,患者血中抗壁细胞抗体和内因子抗体阳性,伴有恶性贫血。B型病变多位于胃窦部,无恶性贫血。也有将由乙醇和非固醇类抗炎药等化学损
第28题: [简答题]1) make an apology, and
2) suggest a solution.
You should write about 100 words.
Do not sign your own name at the end of the letter. Use "Li Ming" instead.
Do not write the address. 参考答案: 答案解析:Dear Bob,
I am so sorry to say that I forgot to return your music CD. I am writing this letter to