单项选择题


Questions 19 to 21 are based on the conversation you have just heard.

A．Advertisers.
B．Manufacturers.
C．Customers.
D．Sellers.
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单项选择题
A．It gives us sufficient information.B．It gives misleading information.C．It lets us know the best product.D．It fails to convince people.
A．It gives us sufficient information.
B．It gives misleading information.
C．It lets us know the best product.
D．It fails to convince people.
单项选择题
According to Dr. Doris Mccubbrey, dieting is ______for weight control.
A．inessential
B．necessary
C．harmless
D．helpful
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