1.  Which of the following is NOT the function of kidneys?
A    The purification of water.
B    The release of hormones and enzymes.
C    The regulation of pH levels.
D    The regulation of minerals.
 
2.  Which of the following is Not the disadvantage of being connected to a dialysis machine?
A    Patients cannot do fully the weekly routine they are used to.
B    Patients should be checked regularly until a transplant is performed.
C    Patients get physically tired.

D    Patients cannot travel far from home.

答案：1.  A    2.  B