搜题请搜索小程序“爱下问搜题”
问题
填空题
在车站进行动火作业，施工方操作人员必须具备（）及相关操作证。
答案
参考答案：动火证
选择题
_____ with the studies of all his students Mr. Johnson went to school as soon as he finished the meeting.
A. Concerning
B. Concerned
C. To concern
D. Being concerned
查看答案
解答题
动物园里有孔雀24只，猴子17只，孔雀的只数是猴子的几分之几？猴子的只数是孔雀的几分之几？
查看答案
