用惰性电极电解下列溶液，电解一段时间后，电解质溶液的pH上升的是：
A．饱和NaCl溶液
B．AgNO3
C．CuCl2
D．饱和NaOH溶液
AC
电解饱和NaCl溶液生成强碱NaOH，pH上升；电解AgNO3溶液生成硝酸，pH减小；电解饱和NaOH溶液相当于电解水，溶液仍然为饱和溶液，pH不变；电解CuCl2溶液，溶质浓度减小，溶液酸性（水解所致）降低，pH升高，故答案为AC
根据对话内容，从方框内选择恰当的句子填入对话相应的空白处，使对话完整，合乎情景（有两个多余选项）。 A: My friend Kate invited me to her birthday party . 小题1:_____________________ B: How about an album? A: 小题2: ___________________________ How much is an album? B: 小题3: ___________________________ A: That’s too expensive . I don’t have enough money for it. B: Oh.小题4:________________________ A: No, no. She doesn’t like cats. B: I see. What about a scarf? A; 小题5:_________________ B: Does she like flowers? Maybe flowers are wonderful. A: Great! I will buy some for her. Thank you..
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