在安全管理上，集团公司创新了什么样的工作方法？
参考答案：
一月一活动，一月一重点。
—How can we protect ourselves ________ the earthquake? —We should stay calm first.
A．with
B．about
C．for
D．from
The heavy smoker has decided to _____ smoking, for he knows smoking _____ his health.
A．cut down, is harmful to
B．cut up, does harm to
C．cut off, is harmful for
D．cut down, does harm for
