单项选择题

Passage Three Questions 17 to 20 are based on the passage you have just heard.

A．Buy a calculator with new features.
B．Return his calculator and buy a cheaper one.
C．Get his calculator repaired.
D．Return his calculator and get a new one.

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单项选择题

A．Climate changes.B．Energy crisis.C．Underground buildings.D．Ancient civilizations.

A．Climate changes.
B．Energy crisis.
C．Underground buildings.
D．Ancient civilizations.

单项选择题

A．He prefers living in a city to the country.B．He prefers living in the country to a city.C．He prefers planes to trains for traveling.D．He prefers trains to planes for traveling.

A．He prefers living in a city to the country.
B．He prefers living in the country to a city.
C．He prefers planes to trains for traveling.
D．He prefers trains to planes for traveling.