单项选择题

A．Two generations of a plant.
B．The features of all living things.
C．The discovery of genes.
D．Genetic research methodologies.
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单项选择题
A．As many as 18.B．Less than 18.C．A few more than 18.D．At least 18.
A．As many as 18.
B．Less than 18.
C．A few more than 18.
D．At least 18.
单项选择题
A．He often has his limbs hurt after driving.B．He was badly injured in a car accident.C．He’d rather the car was much nicer.D．He’s just got an expensive car.
A．He often has his limbs hurt after driving.
B．He was badly injured in a car accident.
C．He’d rather the car was much nicer.
D．He’s just got an expensive car.
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