- 问题详情:Exactlywhenthefirstpeoplearrivedin__1__asCalifornia,noonereallyknows.ScientistsbelievethatthesefirstsetterscrossedtheBerlinStraitfromAsiatoAlaska__2__ofalandbridge.Thousandswerekilledor__3__slavery.__4__,many__5__broughtbyEuropeans.Cloninghastwo_...
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