单项选择题

A．Seminar courses.
B．Tutorial courses.
C．Lecture classes.
D．Laboratory classes.
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单项选择题
A．About the children’s action.B．About social manners.C．About public influence.D．About the changes of the environment.
A．About the children’s action.
B．About social manners.
C．About public influence.
D．About the changes of the environment.
单项选择题
A．All sharks have teeth to cut prey.B．It is sure that sharks like to attack humans.C．The largest types of sharks are known to be aggressive.D．Tiger shark is one of those that have the worst records.
A．All sharks have teeth to cut prey.
B．It is sure that sharks like to attack humans.
C．The largest types of sharks are known to be aggressive.
D．Tiger shark is one of those that have the worst records.
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