单项选择题

The step-test was given ______.

A．at the beginning and at the end of the 7-week period
B．after each exercise period
C．only at the beginning of the 7-week period
D．only at the end of the 7-week period

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单项选择题

What did Group A do in their program

A．They stepped up and down on a bench every day.
B．The didn't do any exercise.
C．They rode on an exercycle every day.
D．They pushed handle bars every day.

单项选择题

When were pulse rates taken

A．After every exercise period.
B．Every time the ratio of active riding was increased.
C．Every day.
D．After each step-test.