根据下列实验内容得出的结论不正确的是
| 选项 | 实验内容 | 结论 |
| A | 向澄清石灰水中通入某气体，产生白色沉淀 | 该气体一不定是CO2 |
| B | 向某溶液中滴加盐酸酸化的BaCl2产生白色沉淀 | 该溶液一定含SO42- |
| C | 向某盐的水溶液中加入氢氧化钠加热，产生能使湿润的红色石蕊试纸变蓝的气体 | 该盐一定是铵盐 |
| D | 向沸水中滴加饱和FeCl3溶液得到红褐色液体 | 该液体是Fe(OH)3胶体 |
答案：B
题目分析：向澄清石灰水中通入某气体，产生白色沉淀，该气体不一定是CO2还可能是SO2，Z正确；向某溶液中滴加盐酸酸化的BaCl2产生白色沉淀，该溶液可能含SO42-还可能含有银离子；故选B。
点评：此类题目要求学生掌握常见的物质间的反应，特别是相似反应的不同点：如CO2和SO2都能使澄清石灰水变浑浊，通入过量又能变澄清；加入氯化钡能生成沉淀的既可以是和钡离子结合也可以是和氯离子结合。
| 选择恰当的单词并用其适当形式填空补全短文。 | |
| |
| Peter held a party on his birthday in his house. Although he 1 a great time, it made him very 2 . Before the party, he did many things. First, he 3 some money from his parents 4 some food and drinks. Next he had to 5 the living room. Then he 6 his father scar to pick up some of his friendss. When the 7 party was over, he found there, 8 still lots of things to do. He 9 the dishes, swept the floor, and took out the trash. When he 10 have a test, it was over twelve o'clock. |