肝前丛交感神经起源于（）
A.左侧T4～T8
B.右侧T4～T8
C.左侧T7～T10
D.右侧T7～T10
E.双侧T4～T10
参考答案：C
Life is ten percent what happens to you and ninety percent _________ you respond to it.[ ]
A. that
B. how
C. whether
D. what
若某程序框图如图所示，则该程序运行后输出的B等于（）．
A．7
B．15
C．31
D．63
