試題詳解

47. During kidney dialysis, blood and a dialyzing solution are separated by a semipermeable membrane. For kidney dialysis to work properly, the dialyzing solution should contain 
(A) a lower solute concentration than blood
(B) a higher concentration of urea than blood 
(C) a lower glucose concentration than blood
(D) a lower concentration of urea than blood 
(E) a much smaller volume of fluid than the blood passing through it