单项选择题

A．An examination of fanners in northern Japan.
B．Tests given on a thousand old people.
C．Examining the brain volumes of different people.
D．Using computer technology.
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单项选择题
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.
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.
单项选择题
A．A present for her mother.B．A present for a friend.C．A present for her father.D．A present for her brother.
A．A present for her mother.
B．A present for a friend.
C．A present for her father.
D．A present for her brother.
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