企业法人终止的原因主要有（）。
A、依法被撤销
B、解散
C、依法宣告破产
D、法人代表死亡
参考答案：A, B, C
若不等式0≤x2-ax+a≤1有唯一解，那么a的值为______．
They want to make _______ clear to the public that they are doing an important and necessary job. [ ]
A. this
B. that
C. it
D. what
