腰丛的分支不包括（）
A.髂腹下神经
B.髂腹股沟神经
C.闭孔神经
D.坐骨神经
E.股神经
参考答案：D
Questions 1-4
What is the speaker’s suggestion for further advancement in learning English？（）
A．Try another approach.
B．Give yourself some time for sleeping.
C．Keep on learning and practicing.
D．Reward yourself from time to time.
可结合抗原的是（）
A.KIR
B.KAR
C.TCR
D.MBL
E.CEA
