Which of these network devices primarily functions at the OSI Network layer（layer 3）（）
A. Switch
B. Gateway
C. Router
D. All of the above
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Two parallel school systems in the UK are______（）
A. national and dependent
B. state and dependent
C. state and independent
D. regional and state
During the Industrial Revolution, the Spinning Jenny was produced by___（）
A. James Watt
B. James Hargreaves
C. George Stephenson
D. Edmund Cartwright
The decline of the feudalism occurred due to the following reasons except______（）
A. the Hundred Years’War
B. the Black Death
C. the Wars of the Roses
D. the Bourgeois Revolution
The first known settlers on the Britain Isles were_____（）
A. the Anglo-Saxons
B. the Beaker Folk
C. the Celts
D. theIberians
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