单项选择题
By the early 19th century,Britain had a road network of some（）miles.
A.115，000
B.120，000
C.125，000
D.130，000
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单项选择题
In Ireland and Scottish Highlands land enclosure led to mass emigration,particularly to（）
A.Africa
B.Eastern Europe
C.Asia
D.The New World -
单项选择题
Land enclosure was a disaster for the（）evicted from their land by the enclosures.
A.landlords
B.tenants
C.farmers
D.wage laborers -
单项选择题
Which of the following statements is NOT considered a characteristic of farming in the late 18th and early 19th centuries?（）
A.Use of artificial fertilizer.
B.Introduction of new agricultural machinery.
C.The'Open-field'system.
D.A system of crop rotation.
