题目

二氧化硫是大气的主要污染物，严禁直接排放，工业上常用NaOH溶液来吸收。 (1)写出NaOH溶液吸收SO2的化学方程式____________。 (2)图中小球分别表示NaOH溶液及吸收SO2后所得溶液中溶质的微粒，其中“●”表示的微粒是_______。 答案：（1）2NaOH+SO2=Na2SO3+H2O （2） Na+Sometimes, travel is not as beautiful as people planned. My friend Michelle and_______had an unhappy journey in Italy. We took an all night train to a town near Venice. We shared a car (车厢) with an Italian family –a _______girl and her parents. The girl had a bad cough. She coughed and cried all the way. We arrived at our hotel early the next morning and took a rest. When it was time to leave for Venice, Michelle said that she didn’t feel well and she couldn’t go,_________ I had to go by myself. I walked around Venice and visited some attractions, and then I was tired. When I decided to go back to the hotel, I ________I couldn’t find my way out of the city. It started getting dark. What should I do? At last, I had to call Michelle to come and help me go back to our hotel. ________bad journey!【1】A. my B. me C. I D. mine【2】A. five-years-old B. five years old C. five year old D. five-year-old【3】A. so B. if C. because D. though【4】A. said B. found C. thought D. guessed【5】A. What an B. How C. What D. What a