第28题: [单项选择]{{B}} Passage One
Questions 26 to 29 are based on the passage you have just heard.{{/B}} A. They are not active animals. B. The weather is too drought and sweltering. C. They have nothing to eat during the summer. D. Their body temperature is not high enough. 参考答案:B 答案解析:[听力原文]
Why do some animals aestivate
[分析] 依据文中:...aestivative animals,however,will have a long
第34题: [单项选择]饮水型地方性砷中毒病区的判定依据 A. 有高砷水源,有典型慢性砷中毒病人,可排除其他污染 B. 有砷中毒病人 C. 有高砷水源存在 D. 饮用井被含砷废水污染,有砷中毒病人 E. 饮水井含砷量超标,有典型砷中毒病人,井旁长期有含高砷废料堆放 参考答案:A 答案解析:饮水型地方性砷中毒病区的判定依据有高砷水源,有典型慢性砷中毒病人,可排除其他污染。