单项选择题

The passage mentions all of the following as uses for copper in colonial America EXCEPT ______.

A．cooking pots
B．scientific instruments
C．musical instruments
D．maritime instruments

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单项选择题

According to the passage, which of the following eighteenth -century developments had a strong impact on silversmiths

A．A decrease in the cost of silver.
B．The invention of heat efficient furnaces.
C．The growing economic prosperity of colonial merchants.
D．The development of new tools used to shape silver.

单项选择题

Why Miran was not allowed to leave the Charles de Gaulle Airport

A．Because he is an Iranian.
B．Because he has no citizenship of France.
C．Because he is stateless,
D．Because he is a refugee.

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