... Because such (60)devices require human testing, their developmentposes a challenge to our cultural and ethical values. Although many patients volunteer for tests ofunproven medical devices, such ... patience as well as keen powers of , since one must sitstill for hours and remain alert to the slightest sound or motion.(A)extreme persuasion(B) skilled concentration(C) cheerful reasoning(D)silent ... reconnect capillaries, tendons,and nerves to reattach severed fingers. They evenrefashion parts of intestines to create new bladders. Line (5)But surgeons find it difficult to reconstructcomplicated...