单项选择题

Passage Three
Questions 32 to 35 are based on the passage you have just heard.

A．Call on people to protect sharks.
B．Point out the living environment of sharks.
C．Explain why the sharks are dangerous.
D．An introduction to sharks.
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单项选择题
A．Red.B．Black.C．White.D．Not all of the above.
A．Red.
B．Black.
C．White.
D．Not all of the above.
单项选择题
A．To estimate the extreme weather.B．To develop the satellite technology.C．To improve agricultural output.D．To learn how to change information to maps more efficiently.
A．To estimate the extreme weather.
B．To develop the satellite technology.
C．To improve agricultural output.
D．To learn how to change information to maps more efficiently.
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