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        1. Ӣҽ̾W(wng) > > }ĿԔ

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          }ĿijȾɫw[zȺеİl(f)ʞ4%F(xin)һF(xin)ķDһӵĸ

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          }ĿDʾDNAP(gun)бe`

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          }ĿǹﻯW(xu)(yng)ԹSՏ(qing)ȵppֲcȕrĹՏ(qing)ȷQa(b)cˆD ABɷNֲĹcՏ(qing)ȵP(gun)ϵՈش

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          }Ŀϵy(tng)ĽY(ji)(gu)Ӵ΁ЌڷNȺ

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          }ĿP(gun)ڻĔ_

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          C. w(ni)ĻO

          D. (x)Ⱦɫ|(zh)ĽMɳɷе|(zh)DNA

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          ͬ(x)Դ