What substance is added to blood to keep it from clotting until it is needed? A.Sugar B.Ethanol C.Mecurium D.Salt Answer and Feedback Answer:D do you want? view more test Xem thêm Share this post Some other questions you may be interested in. In 1814 we took a little trip This traditional Scottish ballad tells the story of Sweet William who died for the love of this lady. Alas, too late she realized her love for him and died of a broken heart. From his grave grew a red, red rose. Who was the lady from whose grave grew a brier? Professor Henry Higgins is the haughty language expert from which musical adaptation of a Shaw play? Which musical features Mabel Norman, a character based on a real-life silent screen actress? Simba is the lead character in which movie musical later made into an award-winning Broadway play? Velma Kelly is a character who appeared in which Bob Fosse show? Huckleberry Finn, one of the Mark Twain characters, appears in which Broadway show by Roger Miller? Fanny Brice is the real-life star of which 60s hit show based on her life? Which Irving Berlin musical is based on the life Annie Oakley? In which long-running musical does Christine DaaĂ© appear?