题目

根据短文内容和首字母提示，在空白处填入适当的单词。 Many people are moving from the c___81____ to cities for work. Cities are large and interesting but they are noisy. The t___82____ is heavy and the c___83___ of living is high. Now some of these peoplp miss country life.In the countryside, There are many houses  w__84_  big yards.The air is f__85___ and life is q__86___. Many people love living there. 81. _____  82. _____    83. _____      84. _____  85. _____  86. _____   下列有关实验操作及实验结论正确的是（　　） A、金属钠着火，可用泡沫灭火器扑灭B、用10mL量筒准确量取7.50mL稀硫酸C、用四氯化碳萃取溴水中的溴时，将溴的四氯化碳溶液从分液漏斗下口放出D、向淀粉溶液中加入稀硫酸，加热几分钟后冷却，再加入新制的Cu（OH）2悬浊液，加热，没有砖红色沉淀生成，证明淀粉没有水解成葡萄糖