氮质血症时,肾小球滤过率常减至()。
A.50%~70%
B.35%~50%
C.20%~35%
D.10%以下
E.5%以下
参考答案:C
解析:[知识点] 急性肾衰竭的临床表现
4. Spend your time just on the things you find _______.
A.being worth your while
B.them worth doing
C.worth being done
D.to be worth doing
以下哪项不能用于治疗远视的是()
A.PRK
B.ICR
C.准分子激光角膜原位磨镶术
D.巩膜扩张术
E.有晶状体眼人工晶状体植入术