单项选择题


Questions 11 to 18 are based on the conversation you have just heard.

A．She is suggesting going to the coast.
B．She likes her home so much.
C．It is rather expensive to go abroad.
D．Her husband doesn’t like to go to the coast.
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单项选择题
According to the passage, how did the Bessemer method make the mass production of steel possible
A．It directed air at melted iron in a furnace, removing all impurities.
B．It slowly heated iron ore, then stirred it and heated it again.
C．It changed iron ore into iron, which was a substitute for’ steel.
D．It could quickly find deposits of iron ore under the ground.
单项选择题
According to the passage, where were large deposits of iron ore uncovered
A．In Pittsburgh.
B．In the Mesabi Range.
C．Near lake Michigan.
D．Near Lake Erie.
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