Anoversight遗漏(miss,overslaugh)inproofreadingoftenresultsinprintederrors.
A、AninconsistencyDoubleEagleinthefirsttransatlanticballoon,wasgreetedbyavidcrowdsinFrance.
Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
Someseaurchins海胆havevenomous(toxin)spines
TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
Peoplewhodonotsleepenoughtendtobecomeirritable.