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.
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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.
单项选择题
A．The reproductive cycle of barnacles.B．A new source of protein.C．Types of sea animals.D．The adhesive quality of barnacles.
A．The reproductive cycle of barnacles.
B．A new source of protein.
C．Types of sea animals.
D．The adhesive quality of barnacles.
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