用树形图分析下列短语:is very kind to the girl
查看答案
用树形图分析下列短语:already finish his homework and housework
用树形图分析下列短语:is satisfied with the results and happy with the life
用树形图分析下列短语:see the development of China
对SQL语句select * from 学生 Where 性别=‘1’来讲, ______部分为选择操作,_______部分为投影操作;SQL语句 Select count (*) From学生,将输出_______行数据。