单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．To ask permission to go to America.
B．To confirm his business trip schedule.
C．To ask how to draft a schedule.
D．To consult her business trip.
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单项选择题
A．During their employment.B．When they have found a job.C．During their childhood.D．When they are in colleg
A．During their employment.
B．When they have found a job.
C．During their childhood.
D．When they are in colleg
单项选择题
According to the passage, in certain situations our former experiences ______.
A．will always work once again
B．can improve the efficiency of solving problems
C．can be our personal treasure
D．may hinder us from conceiving better ideas
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