单项选择题

When does the professor have office hours

A．Mondays.
B．Wednesdays.
C．Fridays.
D．Monday through Friday.
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单项选择题
What is the main subject of this talk
A．Physics laboratories.
B．Test make-up.
C．Class assignments.
D．The class attendance policy.
单项选择题
What happens to students who miss more than four classes
A．They may fail the course.
B．They may not have to make up the work.
C．They may have to do additional assignments.
D．They may not understand the labs.
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