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【单选题】
以下所列数据库系统组成中,正确的是A.
计算机、文件、文件管理系统、程序
B.
计算机、文件、程序设计语言、程序
C.
计算机、文件、报表处理程序、网络通信程序
D.
支持数据库系统的计算机软硬件环境、数据库文件、数据库管理系统、数据库应用程序 和数据库管理员
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举一反三
【单选题】______ at the airport, he telephoned his wife and bold her what he would do when he got home.
A.
Once arrived
B.
As soon as he reached
C.
When he got
D.
Upon arriving
【简答题】Mr. Harris used to work in Dover, but then he changed his work, and he and his wife moved to another town. They did not have many friends there, but they soon met a lot of interesting people, and afte...
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