题目

下列各组离子能在指定溶液中大量共存的是(    ) ①酸性溶液中:Fe2+,Al3+,NO3-,I-,S2- ②在pH=11的溶液中:Na+,AlO2-,NO3-,S2-,SO32-   ③由水电离的c(H+)=1×10-13mol/L的溶液中:Cl-,HCO3-,NO3-,NH4+,S2O32--   ④加入Mg能放出H2的溶液中:Mg2+,NH4+,Cl-,K+,SO42- ⑤使甲基橙变红的溶液中:Fe3+,MnO4-,NO3-,Na+,SO42- ⑥无色溶液中:K+,Cl-,Na+,H2PO4-,PO43- A.①②⑤B.①③⑥ C.②④⑤ D.①②④Fill in tine blanks with the words in their proper forms. Oak is a good type of __________ for making furniture. (wooden)
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