题目

In a small town in England there was a nice house with a large garden. There lived an old man. The old man liked planting flowers and ______ his flowers every day. The garden was so ______ that many passers-by stopped to have a look.One day, an artist was enjoying the beauty of the garden when suddenly he ______ that the old man was blind. The artist asked him ,“______ are you busy looking after the flowers when you can’t see them?”The old man smiled and answered,“There are three reasons. First, I was a gardener when I was young, and I really love ______. Second, I can’t see these fl小思实验操作考试的题目是探究金属的化学性质，内容包括：铜在空气中灼烧、锌与稀硫酸反应、铝丝与硫酸铜溶液反应．图是他实验操作考试中的部分情景．（1）上图中有一处错误的操作，该操作是______；（填序号）（2）操作A的现象是______；（3）他讲铝丝插入到硫酸铜溶液中，未出现任何现象，其原因是______．