人工游泳场所每场开放前、开放时均应进行池水（）等检测，检测结果应公示并注明测定时间，

Mr. Declan was very angry when he found his son had _____ of his warning and went to the bar with his

friends. [ ]

A. nothing

B. neither

C. none

D. either

用所给单词的适当形式填空。

1. _______ (not watch) TV for a long time.

2. What_______those people_______ (do) over there now?

3. If you keep exercising, you _______ (be) healthy.

4. What about _______ (have) an English evening?

5.  I eat vegetables_______ (two)a day.

中共十一届三中全会确立的党和国家的工作中心是

A．以经济建设为中心，实行改革开放

B．促进祖国统一，推行一国两制

C．加强党风廉政建设，实施 * * 倡廉

D．反对霸权主义，维护世界和平

水力矩大小基本因素是由水的重量和其下落高度决定的

车辆限行带来了新的商业机会，这是源于（）。

A、经济变化

B、社会变化

C、技术进步

D、政策和管制制度变化