严复翻译的《天演论》,其原文的题目是()
Hesaidthatthegroup________himaletterandaskedhimtogothereforaninterview.
Ifyouarewalkingawayfromaclocktower,youwillhearthetickingoftheclockfadetoapoint________itcannotbeheard.
Perseveranceisakindofqualityandthatis_______ittakestodoanythingwell.