炉渣的碱度冶炼有什么影响？炼钢生产中，常采用炉渣

Sam was an English student. He always stayed at home for his holidays. But last winter he thought, “I have never left the country. All my friends have been to Spain. They like it very much. So this year I’m going there for my holiday.”

First he went to Madrid and stayed in a small hotel for a few days. One morning he went out for a walk. In his country people drive on the left, but in Spain they drive on the right. Sam forgot about this, and while he came to a busy street, a bike knocked (碰撞) him down.

Sam lay on the ground for a few seconds and then he sat up and said, “Where am I?”

An old man was selling maps at the side of the street. He quickly came to Sam and said, “Maps of the city, sir?”

小题1:Sam came from_________.

A．England

B．Spain

C．Madrid

D．a hotel小题2: Sam went to Spain ________.

A．to see his friends

B．because he like it very much

C．to learn English

D．for his holiday小题3: In ______, people always drive on the left.

A．Spain

B．the street

C．Madrid

D．London小题4:One morning, Sam was badly hurt by __________.

A．a car

B．a bike

C．an old man

D．his friend小题5: When Sam sat up and said, “Where am I?” the old man thought_______

A．he was badly hurt

B．he wanted to buy a map

C．he lost his way

D．he needed some help

建立项目文件，名为my。
(2)将数据库“课本”添加到新建立的项目当中。
(3)为数据库中的表“作者”建立主索引，索引名称和索引表达式均为“作者编号”；为“书籍”建立普通索引，索引名和索引表达式均为“作者编号”。
(4)建立表“作者”和表“书籍”之间的关联。
(考生文件夹下载)

世界三大推理文学宗师指的是柯南道尔、松本清正以及（）。

基础功能中批量导出查询结果的两种方式是（）

A.模板下载

B.导出模板数据

C.导出查询结果

D.其他方式

数据库的物理设计完全依赖于给定的______和______。