There was __________to prevent the accident.     [ ]

A. something that we could to do    

B. something could do    

C. nothing we could do    

D. anything which we could do

下列各句中加粗的词语，解释错误的一项为 [ ]

A．君子博学而日参省乎己——参：检查。

B．吾尝跂而望矣——跂：提起脚后跟。

C．顺风而呼，声非加疾也——疾：快。

D．非蛇鳝之穴无可寄托者，用心躁也——用：由于。