书面表达One possible versionDear PeterI'm writing to invite you to see the Chinese Painting Exhibition to be held in our city.The exhibition will start at 8: 30 am on Saturday and last till 5: 00 pm on Sunday in the city museum It'ssaid that a large number of Chinese paintings, some of which are original works by famous painters like ZhangDaqian and Qi Baishi, will be on display. Besides, there will be various souvenirs to be sold. I know you re veryinterested in traditional Chinese culture, so I can t wait to tell you the news and hope we can go together.Looking forward to your reply.You

12.BC[命题立意]本题考查溶液中离子浓度关系的相关知识,考查了宏观辨识与微观探析、变化观念与平衡思想、证据推理与模型认知的学科素养[试题解析]实验1中,SO2为0.005mol,NaOH为0.01mol,两物质反应恰好生成Na2SO3,根据电荷守恒可得,c(Na+)+c(H+)=2c(S03)+c(HSO3)+c(OH-),根据物料守恒可得,c(Na+)=2[c(S0-)+c(HSO3)+c(H2SO3)],两式联立可得,c(OH-)=2c(H2SO3)+c(H+)+c(HSO3),A项错误;已知K2(H2 SOa)c(H+)·c(SO3-)c(HSO3=1.02×10-7,则pHc(SO=7时,c(H)=10-7c(HsO3)=1.02,故实验2得到的溶液中有c(HSO3)

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