单项选择题

A．They eat protein.
B．They never move from one location.
C．They cause erosion of rocks.
D．They are found only in deep water.
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which
单项选择题
A．can be predicted at birthB．stays the same throughout his lifeC．can be increased by educationD．is determined by his childhood
A．can be predicted at birth
B．stays the same throughout his life
C．can be increased by education
D．is determined by his childhood
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