[单项选择]What does the passage mainly discuss A. The endangered species in Glacier National Park. B. The protection of lands surrounding Glacier National Park. C. Conservation laws imposed by the state of Montana. D. Conservation laws imposed by Congress.
参考答案:B 答案解析:主旨题。该题的理解要求把握全文的结构。全文围绕Glacier National Park的自然保护话题展开,首先说明该公园在自然生态上的重要性,而后介绍了与公园及其毗邻的私人土地所有者之间的环境保护合
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第1题: [单项选择]依据下述哪项指标,可诊断无合并症的高钠血症() A. Uosm>500mOsm/kg B. Posm>300mOsm/kg C. Uosm>300mOsm/kg D. Posm>800mOsm/kg E. Uosm>800mOsm/kg 参考答案:E