进行邮件合并操作时，应把不变的内容作为（）。
A、主文档
B、数据源
C、域名
D、文件
参考答案：A
推拉窗户是______运动．跳绳时绳子是______运动．
—Zhang Ziyi won the award for" great contribution to Chinese films" at the 11th
Shanghai International Film Festival.
—She is ______ the Oscar-winning film Crouching Tiger, Hidden Dragon ( 2000). [ ]
A. well-known for
B. well-known as
C. famous as
D. famous of
