She devoted herself ________to her research and it earned her a good reputation in her field.  [ ]

A. strongly    

B.extremely    

C.entirely    

D.freely

汽车行驶跑偏的可能原因是（）。

A.两前轮轮胎气压不均匀或轮胎直径不等

B.前束过大或过小

C.前钢板弹簧挠度不等

D.车架变形，铆钉松动

E.减振器失效或折断