The low operating costs of the foreign company will ______ the high labor costs the business pays in its own country.

A．offend

B．obstruct

C．oblige

D．offset

[复合型非选择题]患者从高坡上跌落四肢不能活动，检查：手骨间肌、蚓状肌无力，肱三头肌腱反射消失；双下肢瘫痪，各种反射消失

为明确诊断，选择最佳的辅助检查为（）

A.X线

B.B超

C.MRI

D.血管造影

E.肌电图