膝反射改变，提示（）。
A、L1-2病变
B、L2-4病变
C、L5病变
D、锥体束病变
E、S1-2病变
参考答案：B
--Wish you good luck in the exam.
-- .The same to you.
A．Me, too
B．See you
C．I'm sorry to hear that
D．Thank you
用简便方法计算．
①64+29+46+71
②102×18
③32×125
④59×99+59
⑤3200÷25÷4．
