单项选择题


Questions 16 to 20 are based on the following talk.

A． No one but the scientists know what ESP really is.
B． Everybody has the experience of ESP.
C． It is impossible to decide whether one has ESP or not.
D． ESP has been studied by many people.
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three quarters of American households
单项选择题
A． From a travel agency.B． From his friends.C． From advertisements.D． From relatives in Britain.
A． From a travel agency.
B． From his friends.
C． From advertisements.
D． From relatives in Britain.
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