单项选择题

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

A．Computer science.
B．Chemistry.
C．Physics.
D．Mathematics.
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单项选择题
A．hardlyB．seldomC．alwaysD．often
A．hardly
B．seldom
C．always
D．often
单项选择题
A．ThereforeB．AndC．HoweverD．Furthermore
A．Therefore
B．And
C．However
D．Furthermore
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