第12题: [单项选择]在进行地面水流行病学调查时，应调查下列哪一项 A. 水中污染物含量、居民生物监测 B. 水生生物和水中污染物含量、居民生物监测 C. 水中及底质中污染物含量、居民生物监测 D. 水中、水生生物及底质中污染物含量、居民生物监测 E. 水中、水生生物及底质中污染物在的含量 参考答案:D
第34题: [单项选择]We continued to ______out every:t5 minutes to look around and listen to the wind, which although blowing with the same intensity had lost some of its ability to create fear as we became more used to it. A. stumble B. stride C. strive D. stagger 参考答案:B
