阀门第一单元型号J表示为（）。
A.闸阀
B.截止阀
C.减压阀
D.球阀
参考答案：B
Having completed our adventurous journey through the forest, we went back to our camping site, ____. [ ]
A. exhaustedly but excitedly
B. exhaustedly but excited
C. exhausted but excitedly
D. exhausted but excited
十二经脉的交接中，阴经与阳经交接的部位是( )
A．腹部
B．胸部
C．头部
D．手足末端
E．下肢部
