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单项选择题


Passage One
Questions 26 to 28 are based on the passage you have just heard.

A．Relieve pain.
B．Preserve life.
C．Keep energy.
D．Prevent further harm.
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单项选择题A．Influence of mass media on our lives.B．Profitability of mass media.C．Mass media and its short history.D．Mass media and politics.

A．Influence of mass media on our lives.
B．Profitability of mass media.
C．Mass media and its short history.
D．Mass media and politics.

单项选择题A．How space station works.B．The differences between space and the earth.C．How can people build a space station.D．The reason why people want a space station.

A．How space station works.
B．The differences between space and the earth.
C．How can people build a space station.
D．The reason why people want a space station.