单项选择题

A．He gets ill at the same time every year.
B．He doesn’t get enough exercise.
C．He often has difficulty sleeping.
D．He is always sick throughout the winter.
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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.
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.
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.
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