正确答案: B

easy

题目：40_____.

解析：B

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学习资料的答案和解析：

[单选题]已知室温时，0.1mo1/L某一元酸HA在水中有0.1％发生电离，下列叙述错误的是：

升高温度，溶液的pH增大

[单选题]With the world changing fast, we have something new______with all by ourselves every day.

to deal D． dealing