单项选择题

In the first paragraph, the author intends to tell us that（）

A．early American industries mainly depended on new methods.
B．early American industries mainly depended on people who did skilled work with their hands.
C．early American industries mainly depended on England industries.
D．early American industries mainly depended on new changes.

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单项选择题

In the Western world, currencies are particularly valued against

A．the price of gold.
B．the US dollar.
C．the British pound.

单项选择题

What influences the value of a nation’s currency is

A．the reserve of its natural resources.
B．the state of its trade.
C．the reserve of its currency.