鼻、上下唇、舌尖、舌侧、牙龈淋巴引流一般至哪个淋巴结（）
A.颏下
B.下颌下
C.舌下
D.咽后
E.咽旁
参考答案：B
I walked up to the top of the hill with my friends, ______ we enjoyed a splendid view of the lake.
A．which
B．where
C．who
D．That
维生素B1缺乏伴有周围神经无力和感觉异常。( )
