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．At a fitness centre.B．At a clinic.C．At a school.D．At a club.
A．At a fitness centre.
B．At a clinic.
C．At a school.
D．At a club.
单项选择题
Just over half the nurses in the 1986 study believed that management understood the effects that shift work had on them.
A．Y
B．N
C．NG
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