How many students passed the exam？
A. 280
B. 570
C. 285
What do we learn from this conversation？
A. John Smith can't come to the phone right now.
B. John Smith isn't in right now.
C. The caller dialed the wrong number.
互联网上的一台主机如果使用C类地址202.93.120.255作为数据报的目的IP地址，那么这个数据报将同时发送到______网络上的所有主机。
A. 202.93.120.0
B. 202.0.120.0
C. 202.0.0.0
D. 202.93.0.0
Where does this conversation most likely take place？
A. In a bookstore.
B. In a library.
C. In a classroom.
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