【单选题】PPT演示文稿储存以后,默认的文件扩展名是
【单选题】WPS演示文稿储存以后,默认的文件扩展名是
【简答题】The fundamental reform. should promote corporations to answer for their workers and the environment.
【多选题】What was the fundamental shift that Apple's iPad marked in the computer industry? (More than one answer)
A.
Software companies did not control the market any longer.
B.
The power had shifted back to the manufacturers.
C.
Apple's iPad made computer available for everyone.
D.
It made learning enjoyable.