The quesions is _____(困难的), They can't answer it.
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Mary hates dancing. She thinks it is_____(枯燥的)
My______(爱好)is playing the piano.
John likes collecting_______(邮票)
在Visual C++程序设计中,使用WinSock2.2实现网络通信的功能需要引用的头文件为()。
A. Winsock.h
B. winsock2.h
C. winsock22.h
D. winsock2.2.h