()厂排放的废水中需监测挥发酚。
A.炼油
B.肉联
C.汽车制造
D.电镀
参考答案:A
----Is this the first time you _____Chengdu ?
----No. But the first time I _____here, the city wasn't so beautiful.
A.visited, came
B.visited, have come
C.have visited, have come
D.have visited, came
十七大报告指出:党的一切奋斗和工作都是为了()。
A.发展经济
B.造福人民
C.社会事业