The Salk vaccine is a major factor in the fight to eradicate polio.
A、completelydestroyA
暂无解析
Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
EllaGrasso,electedgovernorofConnecticutin1974,supportedtheenactment(given,granted)ofafreedom-of-informationlaw.
Urban renewal programs strive to upgrade areas that are becoming slums.
An oversight 遗漏 (miss, overslaugh) in proofreading often results in printed errors.
HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?
