单项选择题

Why did southerners want to keep slavery

A．They could employ large numbers of slaves in cotton plantations.
B．They could only produce cotton.
C．The black people could go to the north to make money.
D．They could unite the southern states.

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热门试题

单项选择题

The main contradiction between the north and the south was that ______.

A．northerners thought they didn't make large profits from cotton
B．northerners thought slavery was the cause of the backwardness in the south
C．southerners thought the north made the south poor
D．the north and the south had different interests

单项选择题

He carried the parcel home himself, but he ______ so, the shop could have sent it.

A．did not need to do
B．needn't have done
C．must not have done
D．couldn't have done