About the kidney, which of the following descriptions are correct?
A.Each kidney has two ends, two borders and two surfaces. B.The central part of the lateral border has the renal hilum (肾门). C.The structures, which pass through the renal hilum, are enclosed together by the connective tissue t D.From superior to inferior, the order of structures in the renal pedicle is renal vien, renal artery, E.The left kidney is lower than the right kidney正确答案AC