问题
单项选择题
POS系统的意思是（）。
A.自动销售系统
B.物品编码系统
C.国际标准书号
D.通用产品条形码
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
POS系统的意思是（）。
A.自动销售系统
B.物品编码系统
C.国际标准书号
D.通用产品条形码
参考答案：A
听对话，选择正确答案，听两遍。
| ( )1. A. A clock | |
| ( )2. A. Jim's | |
| ( )3. A. Jim is | |
| ( )4. A. He is my father | |
| ( )5. A. Yes, they are | B. A watch |
| B. Maria's | |
| B. Jeff is | |
| B. He is my uncle | |
| B. No, they aren't | C. A ruler |
| C. Yes, it is | |
| C. Helen is |
C. He is my friend
C. They are brother and sister