单项选择题

A．Their play things.
B．Some money.
C．Their relative’s hands.
D．Their shoes.
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单项选择题
What we could do in order to change the characteristics of plants and animals A) We could alter the DNA genetic code. C) We could select new breeding practices. B) We could build new life forms. D) We could add chemicals.
A．What we could do in order to change the characteristics of plants and animals
B．We could alter the DNA genetic code.
C．We could build new life forms.
D．We could select new breeding practices.
E．We could add chemicals.
单项选择题
A．At customs.B．In a bank.C．At the travel agency.D．In a department store,
A．At customs.
B．In a bank.
C．At the travel agency.
D．In a department store,
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