They can’t go out to work        the heavy rain.

A．because

B．since

C．because of

D．as a result

坐骨神经痛检查时可发现的体征有()

A．沿坐骨神经通路的压痛点

B．直腿高举试验(+)

C．小腿或足背外侧感觉减退

D．膝腱反射消失

E．踝反射减弱或消失