城市开发中常提到的“七通一平”中的“七通”是指( )的贯通。
A.给、排水管道
B.电力线路
C.电话线路
D.热力管道
E.燃气管道
参考答案:A,B,C,D,E
Mother _____ her son and said: "You'd better put on your coat. It's cold outside." [ ]
A. turned on
B. turned down
C. turned off
D. turned to
不属于即时通信的P2P应用是( )。
A.MSN
B.Gnutella
C.Skype
D.ICQ