单项选择题

Passage B
Questions 26 to 30 are based on the passage you have just heard.

A．Putting a roof on a barn.
B．Harvesting water reeds.
C．Using stone as a building material.
D．Daily farm operations.
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单项选择题
A．A prediction of the future of mankind.B．A new drug that may benefit mankind.C．An opportunity for a good job.D．An unsuccessful experiment.
A．A prediction of the future of mankind.
B．A new drug that may benefit mankind.
C．An opportunity for a good job.
D．An unsuccessful experiment.
单项选择题
A．To show a videotape on survival in outer space.B．To gain support for the space program.C．To describe her experience on space missions.D．To inform the audience about the space suit.
A．To show a videotape on survival in outer space.
B．To gain support for the space program.
C．To describe her experience on space missions.
D．To inform the audience about the space suit.
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