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Gaokao Biology Practice Question

4．（6分）若给人静脉注射一定量的0.9%NaCl溶液，则一段时间内会发生的生 理现象是（）

  1. A.机体血浆渗透压降低，排出相应量的水后恢复到注射前水平
  2. B.机体血浆量增加，排出相应量的水后渗透压恢复到注射前水平
  3. C.机体血浆量增加，排出相应量的NaCl和水后恢复到注射前水平
  4. D.机体血浆渗透压上升，排出相应量的NaCl后恢复到注射前水平

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