能引起卫生法律关系产生、变更、消灭的客观事实称为（）
A．法律事实
B．法律事件
C．法律行为
D．法律实践
参考答案：A
股票回购可以减少收购公司的兴趣。( )
Mary couldn’t go to the cinema with us because she had to _____ her little brother.
A. look for B. look after C. look at D . look into
