A、and
B、by
C、is
D、said by
A、and
B、by
C、is
D、said by
Blood Lactate Levels during Vigorous Exercise: The concentrations of lactate in blood plasma before, during, and after a 400 m sprint are shown in the graph. (a) What causes the rapid rise in lactate concentration? (b) What causes the decline in lactate concentration after completion of the sprint? Why does the decline occur more slowly than the increase? (c) Why is the concentration of lactate not zero during the resting state?
A、Their high school records and their scores on SATs or the “Scholastic Aptitude Tests”
B、Recommendations from their teachers
C、Good impressions they make during interviews at some universities
D、All of the above
A、descend to chaos
B、decrease into chaos
C、descend into chaos
D、decrease to chaos
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