单项选择题

A．a book about computer programming.
B．a book about computer science.
C．a book about natural science.
D．a book about physics.
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单项选择题
A．health.B．age.C．weight.D．height.
A．health.
B．age.
C．weight.
D．height.
单项选择题
A．from several myths.B．St. Valentine was put to death on the 14th of February.C．St. Valentine was a legendary romantic.D．St. Valentine was in disfavour with the Roman emperor.
A．from several myths.
B．St. Valentine was put to death on the 14th of February.
C．St. Valentine was a legendary romantic.
D．St. Valentine was in disfavour with the Roman emperor.
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