抽样调查是从调查对象的总体中( )一部分单位进行调查，并由此推测总体的情况。
A、选定抽取C
暂无解析
Withtheacquisitionofsmallercompaniesbylargerones,the1960'ssawawaveofnewconglomerates.
------Ihearyou____inapub.what’sitlike?
------Well,it’sveryhandworkandI’malwaystired,butIdon’tmind.
HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?
Whatapity!Youmissedthesightseeing,orwe_________agoodtimetogether.
Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodiesrelativetooneanother.
