单项选择题

A．Diseases can be diagnosed earlier.
B．Medicines will be targeted more accurately.
C．Scientists can identify and replace the faulty genes.
D．All of the abov
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单项选择题
A．She finished school.B．She opened a company together with her father.C．She didn’t do anything meaningful.D．She worked in her father’ s company.
A．She finished school.
B．She opened a company together with her father.
C．She didn’t do anything meaningful.
D．She worked in her father’ s company.
单项选择题
A．Christopher Columbus.B．Amerigo Vespucci.C．Martin Waldseemueler.D．Unknown.
A．Christopher Columbus.
B．Amerigo Vespucci.
C．Martin Waldseemueler.
D．Unknown.
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