A. Heart B. Liver C. Kidney
22. The highest content in human cells is ().
A. Water b protein c fat
23. The following nutrients with the same weight, the most productive is ().
A. protein B Fat C Sugar
24. In life,
The heat energy of the human body mainly comes from which of the following nutrients ().
A. Sugar B Fat C protein
25. Water is the most abundant substance in human body, accounting for about () of human body weight.
A.65% or so B.70% ~ 80% C.90% or more
26. Anemia is a common disease in children. Which of the following minerals may be related to it? ( )