穿四边孔的神经是()
A.胸背神经
B.胸背动脉
C.旋肩胛动脉
D.腋神经
E.桡神经和肱深动脉
参考答案:D
We are living in an age ______ many things are done on computers. [ ]
A. which
B. when
C. that
D. where
我国规定1岁内必须完成的计划免疫是()
A.卡介苗
B.乙脑疫苗
C.流脑疫苗
D.流感疫苗
E.甲肝疫苗