跖反射的反射中枢位于（）。
A.腰髓1～2节
B.腰髓2～4节
C.骶髓1～2节
D.骶髓2～4节
E.骶髓2～3节
参考答案：C
I was told that it was a very serious disease. If left _____ properly, the patient might lose his ability to walk
about in just a year or so.[ ]
A. untreat
B. untreated
C. being untreated
D. to untreat
睾丸淋巴瘤的声像图特点为（）
A.两侧睾丸受累，内部回声极低
B.两侧睾丸受累，内部回声中等
C.一侧睾丸受累，内部回声中等
D.一侧睾丸受累，内部回声极低
E.两侧附睾受累，内部回声中等
