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A￡?Na+?来源:91考试网￠Mg2+?￠Cl-?￠OH-
B￡?H+?￠Ca2+?￠CO32-?￠NO3-
C￡?Cu2+?￠K+?￠SO42￡-?￠NO3-
D￡?Na+?￠H+?￠OH-?￠Ca2+
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A￡?Na+?￠Mg2+?￠Cl-?￠OH-
B￡?H+?￠Ca2+?￠CO32-?￠NO3-
C￡?Cu2+?￠K+?￠SO42￡-?￠NO3-
D￡?Na+?￠H+?￠OH-?￠Ca2+
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I tell you hopeless grief is passionless. 我告诉你,没有希望的悲伤是没有感情的. 
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