In1861itseemedinevitablethattheSouthernstateswouldbreakawayfromtheUnion.
A、strangeThecontrolsofmostmodernairplanescanbeoperatedeithermanuallyorautomatically.
Alligatorsstillexistinsomeofthedank潮湿swampsandbayous小海湾ofAlabama'scoastalregions.
Oneofthegreatestbreakthroughsforprofessionalwomencamein1973whenthefieldofbankingopenedupforthem.
InthenortheasternUnitedStates,itrainsintermittently间歇地throughoutthespring.
Someseaurchins海胆havevenomous(toxin)spines
