单项选择题
A.Multiplied B.Integrated C.Efficient D.Convenient
A.When the contact is not well-planned. B.When the animals are irritated. C.When he recalls the contact afterwards. D.When he is reminded of the danger.
A.provide a legal shelter for strikers. B.keep union movements under control. C.protect company property from being damaged. D.prevent Taft Vale incident from ever happening again.