单项选择题

A．The oxygen level in the water.
B．The angle of the treadwheel.
C．The weights on the divers.
D．The temperature of the water.
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单项选择题
A．To explain a new requirement for graduation. B．To interest students in a community service project. C．To discuss the problems of elementary school students. D．To recruit elementary school teachers for a special program.
A．To explain a new requirement for graduation.
B．To interest students in a community service project.
C．To discuss the problems of elementary school students.
D．To recruit elementary school teachers for a special program.
单项选择题
A．His vacation has been postponed. B．He needs to take his medicine with him on vacation. C．He is going to change his allergy medicine. D．His allergies no longer bother him.
A．His vacation has been postponed.
B．He needs to take his medicine with him on vacation.
C．He is going to change his allergy medicine.
D．His allergies no longer bother him.
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