阅读下面材料，在空白处填入一个适当的词或括号内单词的正确形式，字数不限。
     A young man told off ____ kid for eating on the subway in Hong Kong. The boy's  mother got angry about the young man's attitude and they started to argue with each other.
   This happened last month and has caused a huge ____(argue)on the Internet. Some people think the child didn't know eating shouldn't  ____（allow） on the Hong Kong subway.
   James Yien, ____ is the chairman of the Hong Kong Tourism Board, asked both sides to calm down. “We should learn to see things from the ____(other)side ,” he said. “Hong Kong citizens should be ____(polite)than the tourists and explain local rules to them.” He also thinks that travelers should ____ (improvement)their manners. “When in Rome, do ____the Romans do.”
The National Tourism Administration has released a list of tourist's worst behaviors, ____ (include) littering, spitting, line-jumping ,taking off shoes in public and ____ (smoke)in non-smoking areas.

某程序框图如图所示，该程序运行后输出的n值是8，则S₀值为下列各值中的（　　）

我国历代王朝为加强中央对地方的管辖，先后实行了不同层级的地方行政区划。按照时序排列，以下选项正确的是
①行省–路–府–州–县  ②州–郡–县     ③郡–县    ④道–州–县

影响滑轮组机械效率的主要因素有____，____、____．另外对同一滑轮组，所挂重物越重，机械效率越____．

含磷的洗涤剂因含有Na₅P₃O₁₀造成水生植物大量繁殖而污染环境，因此我们提倡使用无磷洗涤剂．下列化合价在Na₅P₃O₁₀中没有出现的是（   ）