血红蛋白分子中含574个氨基酸,共有4条肽链。在形成此蛋白质分子时脱下的水分子数目和其含的肽键数目分别是 ( )
A:573和573
B:570和573
C:573和570
D:570和570
—Sure it is! The government ________ have made great efforts!