第18题: [单项选择]According to the passage, when three people look out the same window, ______. A. they will give three different answers B. they will see three different scenes C. they cannot see clearly D. they can only see the busy traffic 参考答案:A 答案解析:[精解] 题干意为“根据这篇文章,当三个人朝同一扇窗外望去时…”。该题为细节题。由第一段第二句可知答案。
第19题: [单项选择]下列哪项是致病性阿米巴() A. 结肠内阿米巴 B. 哈氏内阿米巴 C. 布氏嗜碘阿米巴 D. 微小内蜒阿米巴 E. 溶组织内阿米巴 参考答案:E