单项选择题

A．The invention of machine.
B．The invention of the alphabet.
C．The invention of rockets.
D．The invention of agriculture.
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单项选择题
A．The invention of machine that can save labor and the progress of scientific agriculture.B．The invention of crude equipments and agricultural implements.C．The advance of agriculture machinery and the iron plow.D．The idea of a cast-iron plow and steel plow.
A．The invention of machine that can save labor and the progress of scientific agriculture.
B．The invention of crude equipments and agricultural implements.
C．The advance of agriculture machinery and the iron plow.
D．The idea of a cast-iron plow and steel plow.
单项选择题
A．She hopes the fruits are in season.B．She hopes the apples look nice.C．She hopes the fruits are tasty.D．She hopes the fruits are cheap.
A．She hopes the fruits are in season.
B．She hopes the apples look nice.
C．She hopes the fruits are tasty.
D．She hopes the fruits are cheap.
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