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．The organization of a conference.B．The cost of renting a conference room.C．The decoration of the conference room.D．The job of cleaning up the dining-room.
A．The organization of a conference.
B．The cost of renting a conference room.
C．The decoration of the conference room.
D．The job of cleaning up the dining-room.
单项选择题
A．He can’t find his office key.B．He has misplaced some exams.C．He’s unable to talk.D．He doesn’t like his classroom.
A．He can’t find his office key.
B．He has misplaced some exams.
C．He’s unable to talk.
D．He doesn’t like his classroom.
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