单项选择题

This passage says that the work of removing stones ______.

A．must be done again and again
B．is usually done during the winter
C．is an interesting job children enjoy doing
D．was more difficult before machines were used

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单项选择题

New England is an area ______.

A．in the United Kingdom of the Great Britain
B．which has been newly discovered by the Englishmen
C．which lies between Australia and New Zealand
D．which lies in the northeastern comer of the United States

单项选择题

According to this passage, farming is difficult in New England because ______.

A．the winter is very long there
B．the farms are very old
C．the soil is rocky and thin
D．there is not enough machinery for farming