第10题: [单项选择]原发性肝癌的发生与下列哪种疾病有关()。 A. 乙型肝炎 B. 肝结核 C. 肝血管瘤 D. 肝囊肿 E. 肝脓肿 参考答案:A 答案解析:原发性肝癌的病因还不很清楚,但与以下因素有关:①病毒性肝炎,在我国主要为乙型肝炎。我国肝癌患者HBsAg标记阳性达90%,HBsAg阳性者,患肝癌的相对危险性为HBsAg阴性者的10~50倍。②大量摄
第11题: [单项选择]What do sales figures reflect in free market terms A. They reflect the manufacturers’ decision of production cut-backs. B. They reflect the state of local market forces at any one place and at any one time. C. They reflect the demands and supplies of a corporation. 参考答案:B 答案解析:[精析] 题目:自由市场情况下,这些销售数据反映什么对话中提到“In free market terms, sales figures reflect the state of local marke