①维护国家统一和民族团结
②依法纳税和服兵役
③遵纪守法和尊重社会公德
④控告检举违法犯罪
A:①②④
B:①③④
C:①②③
D:②③④
____ ____ the science labs?
----You park here! Look at the sign, it says “No parking”.
----Sorry, I didn't notice that sign just now.