According to S. Seiler and S.Sailer ______A．female athletes will have run faster than mal
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According to S. Seiler and S.Sailer, ______
A．female athletes will have run faster than male ones by the middle of the next century.
B．men intend to run faster than women because they are in a more advantageous physical condition.
C．women have improved much more in running speed than men because the former seem to have greater endurance.
D．the rate of improvement in running speed for female athletes has much reduced since the research began.