对于CT诊断颈椎创伤，错误的是：A．发现横突骨折，即可诊断椎动脉损伤 B． 对于环

核黄疸

方程x²+kx+1=0与x²-x-2=0有一个根相同，则k=______．

When I saw his pale face, I ________ what ________. [ ]

A. realized, had happened

B. was realizing, was happening

C. realized, has happened

D. has realized, had happened

猕猴桃是中等喜光果树，多数种类喜半荫环境。

（）是民生之本，是劳动者生存和发展的前提条件

A.教育

B.医疗

C.住房

D.就业