单项选择题

A．Causes of left-handedness and right-handedness.
B．Two scientific explanations of the cause of left-handedness.
C．Genes for left-handedness.
D．Mental problem of left-handed people.
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单项选择题
A．In a courthouse.B．In a department store.C．In a warehouse.D．In a fashion designer’s studio.
A．In a courthouse.
B．In a department store.
C．In a warehouse.
D．In a fashion designer’s studio.
单项选择题
A．Grades.B．Privacy.C．Sports.D．Money.
A．Grades.
B．Privacy.
C．Sports.
D．Money.
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