第15题: [单项选择]Passage Three Questions 33 to 35 are based on the passage you have just heard. A. By removing the bottom of the basket. B. By lowering the position of the basket. C. By simplifying the complex rules. D. By altering the size of the basket. 参考答案:A 答案解析:[听力原文] How was the problem with the new game solved
第18题: [单项选择]下列哪项乙型肝炎检查指标不容易被检测到() A. HBsAg B. 抗-HBs C. HBcAg D. 抗-HBe E. 抗-HBc 参考答案:C 答案解析:核心抗原(HBcAg)主要存在于受感染的肝细胞内,血中无游离的HBcAg,血液中的HBV颗粒经处理后才可以检测到HBcAg。