Human behavior is mostly a product of learning ________ the behavior of animals dependsmainly on instinct.
D
暂无解析
Forthenewcountrytosurvive,________foritspeopletoenjoyprosperity,neweconomicpolicieswillberequired.
________withthesizeofthewholeearth,thehighestmountainsdonotseemhighatall.
Shehadclearlyno________ofdoinganywork,althoughshewasverywellpaid.
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
Itisusefultoscience_______theearthasanobjectinspace.