在进行电话外呼业务时，在开场白后，一般用（）式问题来引出客户更全面的阐述性回答。
参考答案：开放
关系数据库管理系统应能实现的专门运算包括
A．排序、索引、统计
B．选择、投影、连接
C．关联、更新、排序
D．显示、打印、制表
按要求改写句子。
1. He was born on June 22, 1984. (对画线部分提问)
______ ______ ______ born?
2. We lived in London for about three years. (同上)
______ ______ ______ you ______ in London?
3. This box is so heavy that I can't carry it. (改为同义句)
This box is ______ heavy ______ me ______ carry.
4. I was born in Ji'nan in 1996. (对画线部分提问)
______ and ______ ______ you ______?
5. She begins to work at 8:00 every morning. (改为同义句)
She ______ ______ at 8:00 every morning.
