单项选择题

Questions 19-22 are based on the following dialogue: What did the professor want to talk to Ann about

A．A vacation trip to Yellowstone Park.
B．A lecture by a visiting professor.
C．Her biology thesis.
D．A research project.
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单项选择题
How did the woman spend last weekend
A．Relaxing at the seashore.
B．Visiting her parents.
C．Sailing on a boat.
D．Preparing for a race.
单项选择题
Why do many people will run most of their errands electronically
A．Because it saves much of their money and time.
B．Because they will simply talk to their home computers.
C．Because they will exchange their ideas with computers.
D．Because it is convenient and time-saving.
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