单项选择题


Questions 22 to 25 are based on the conversation you have just heard.

A．Lower prices.
B．More choices.
C．More competition.
D．More companies.
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单项选择题
A．Botany is a very ancient learning.B．People in the Stone Age knew a lot about plants.C．People in the Stone Age knew little about plants.D．Pre-industrial societies have little insights about plants.
A．Botany is a very ancient learning.
B．People in the Stone Age knew a lot about plants.
C．People in the Stone Age knew little about plants.
D．Pre-industrial societies have little insights about plants.
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