题目内容
Lisa’s volunteer journey was not very comfortable and the facilities were poor.
查看答案
搜索结果不匹配？点我反馈
更多问题
Lisa chose to work on the health programmebecause as a child she wanted to be a doctor.
The worst part of the experience was digging holes to make toilets.
The best part of the experience was the personal interaction and bonding experience.
设有关系模式：销售（顾客号，商品号，销售时间，销售数量），若一个顾客可在不同时间对同一产品购买多次，同一个顾客在同一时间可购买多种商品，则此关系模式的主键是 ( )
微信支付 
支付宝支付