单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．To cancel his trip.
B．To go to bed early.
C．To catch a later flight.
D．To ask for a wake-up call.
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单项选择题
A．It has broken down before.B．She generally doesn’t allow people to borrow it.C．She is trying to sell it,D．She bought it from a friend,
A．It has broken down before.
B．She generally doesn’t allow people to borrow it.
C．She is trying to sell it,
D．She bought it from a friend,
单项选择题
We learn from the passage that olestra is a substance that______.
A．contains plenty of nutrients
B．renders foods calorie-free while retaining their vitamins
C．makes foods easily digestible
D．makes foods fat-free while keeping them delicious
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