药物警戒的重要作用体现在哪些方面（）。

A.药品上市前风险评估

B.药品上市后风险评估

C.发现药品使用环节的问题

D.发现药品生产环节的问题

E.发现和规避假、劣药流入市场

B.根据短文内容及首字母提示完成短文（每空一词）

Recently a lot of people have been punished for speaking on their mobile phones while driving. S  1  on the phone requires concentration(集中，专心) and takes a driver’s  a   2  from the road.If you drive after you have consumed alcoholic(含酒精的) drinks, you are a   3  the law and risking your own life as well as the lives of o  4  . If you are with someone else who has been drinking alcohol, even i  5 they had just a glass of beer, do not a  6  them to drive.

There is a fact that driving too fast through city streets is very irresponsible and d  7   . Our city streets are always b  8  with people, cars and bicycles. Drivers have to take the responsibility(责任) to be c   9  _ for people crossing the road, especially older people who may walks   10  and young children who may not look before stepping into the road.