The singer and dancer ________ our party this evening.
A. is to attend
B. are going to attend
C. is about to attend
D. were to attend
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One of the things she wrote about ________ life on a small farm at the beginning of the century.
A. is
B. were
C. are
D. was
TCP协议成为（）
A. 网际协议
B. NetWork内部协议
C. 传输控制协议
D. 中转控制协议
如果在关闭Socket时发生一个I/O错误，会抛出（） 异常。
A. IOException
B. UnknownHostException
C. SocketException
D. MalformedURLException
当找不到客户的服务器地址时会抛出（）异常。
A. IOException
B. UnknownHostException
C. SocketException
D. MalformedURLException
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