问题 填空题 看图，填空。1. + = three 2. + = 3. + = 4. + = 答案 1. women / girls 2. seven children 3. five dresses 4. eleven fish
+ 
= three 
+ 
= 
+ 
= 
+ 
= 
[Cu(NH3)3]Ac·CO（正反应为放热反应）