（）让粘有油脂的手套，棉纱和工具等同氧气瓶、瓶阕及管路接触。
A.严禁
B.可以
C.白天不能
D.晚上不能
参考答案：A
I have advised him not to do like that, but he still insists on doing it that way. I think he has
his own opinion _________.[ ]
A.above all
B. first of all
C. in all
D. after all
铁道部副部长王志国3月13日在十一届全国人大三次会议新闻中心接受集体访问时表示，经过几年的不懈努力，目前我国高速铁路运营里程居世界第（）位。
A.一
B.二
C.三
D.四
