单项选择题

Why did farmers reject Newbold's plow （）

A．Their horses were frightened by it.
B．They preferred lighter tools.
C．It was too expensive.
D．They thought it would ruin the lan

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单项选择题

The expression make the most of in Line 4 is closest in meaning to which of the following （）

A．Get the best yield from.
B．Raise the price of.
C．Exaggerate the worth of.
D．Earn a living on.

单项选择题

What is the main topic of the passage （）

A．The need for agricultural advances to help feed a growing population.
B．The development of safer machines demanded by the labor movement.
C．Machinery that contributed to the agricultural revolution.
D．New Jersey as a leader in the agricultural revolution.