____is a the oldest surviving epic poem in the English language and the most important work of Anglo-Saxon literature（）
A. Beowulf
B. The Ecclesiastical History of the English People
C. The Anglo-Saxon Chronicle
D. Elene
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___ the real ancestors of the country（）
A. The Celts
B. Anglo-Saxon people
C. Romans
D. The Normans
In 597,____from Rome brought Christianity to England（）
A. St. Augustine
B. Thomas Moore
C. Julia Caesar
D. King Alfred
A campus network belongs to（）
A. personal area network
B. LAN
C. MAN
D. WAN
The main function of transmitter in data communications system is（）
A. transmitting signal from source to destination
B. transmitting data from source to media
C. generating data to be transmitted
D. generating signal which is suitable to be transmitted in the communication system
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