Clear guidelines will be helpful to motivate the listener to action.
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A、the evolution of most genetic variation in a population is influenced by genetic drift.
B、when natural selection is at work on protein variants, it will lead to little variation in the population.
C、most molecular variation is adaptively neutral—for example, most protein variants are functionally equivalent.
D、natural selection is still an important evolutionary force.
E、genetic variation in a population is maintained mainly by natural selection.
A、theory of purchasing power parity
B、law of one price
C、theory of money neutrality
D、quantity theory of money
A、Be brief
B、Make sure your remarks are completely accurate
C、Don’t take the speaker’s job
D、Try to create a sense of anticipation and drama
A、Establish noble themes
B、Be sincere
C、Connect with the audience
D、Appeal to the audience
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