单项选择题

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

A．They were responding to an oral interview.
B．They were making outlines of their essays.
C．They were answering several history questions.
D．They were evaluating each other’s answer.
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单项选择题
You can bounce back quickly and easily minor computer disasters with the help of
A．making disaster plans and running drills
B．a good offsite storage plan
C．the right tools
D．both B and C
单项选择题
A．Walking.B．Driving.C．Reading a book.D．Rowing a boat.
A．Walking.
B．Driving.
C．Reading a book.
D．Rowing a boat.
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