HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?
A、onlyInsectpestsareamongtheleadingcausesofcropfailure.
Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
TheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.
TheeconomyofDallas,Texas,isstronganddiversified.