带着问题阅读《爬山虎的脚》。
邵阳市2015年初中化学实验操作考查中,某同学抽到的考题是:组装一套用高锰酸钾制取氧气的装置,实验桌上准备了一小团棉花,木块和仪器如图1:
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I have a friend. His name is Li Daming. He often gets up ____ six o'clock in the morning. He ____ breakfast at seven. He goes to school five days a week. After school,he ____ plays games for half an hour. Look! What is he doing?He is ____ basketball. In the evening he does his ____ and he likes listening to music. He often ____TV for half an hour____ he finishes his homework. He goes to bed at ten o'clock. Do you ____ him?
原始农业为古代文明社会的形成奠定了重要的物质基础。原始农业兴起于中国黄河、长江和淮河等流域,大约在( )