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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单项选择题
A．To see how certain chemicals produce different flavors.B．To determine if a person can distinguish salty and sweet solutions.C．To map the location of taste buds.D．To count the number of taste buds.
A．To see how certain chemicals produce different flavors.
B．To determine if a person can distinguish salty and sweet solutions.
C．To map the location of taste buds.
D．To count the number of taste buds.
单项选择题
A．She needs more practice.B．She is very good at her study.C．She shouldn’t be so ambitious.D．She’d better take care of her health.
A．She needs more practice.
B．She is very good at her study.
C．She shouldn’t be so ambitious.
D．She’d better take care of her health.
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