小明所在班级有16名男生报名参加校运动会，他们的身高（单位：cm）如下：

170  165  178  166  173  163  178  172

170  174  170  170  174  178  178  178

（1）将这16名男生的身高由矮到高排列，统计每种身高的频数和频率，并填如表．

（2）身高超过170cm的同学有几名？约占总人数的百分之几？（精确到1%）

   Maria lives in the beautiful countryside．She usually gets up early in the morning，1she's never late for schoo1．After getting up，she often showers and has a good breakfast．Then she2 for school at around 6：303her home is very far from schoolshe likes riding her bike better than4the bus．It takes her about an hour5her bike．It's so long! On the way，she sings and sings so she always feels6．Also she thinks that it's good for her health7to school by bike．
   After school she usually goes back8with her friend，Linda．Linda’s home is nearer than Maria's． It's only three miles from her home9schoo1．Linda likes riding，too．And she also thinks that it is a good10of transportation．

初二（3）班的历史兴趣小组准备对一个历史课题进行研究，他们搜集了以下一些历史资料：①林则徐生平史迹  ②英国军队侵华暴行  ③割让香港岛示意图。根据这些历史资料，他们研究的课题应该是关于（    ）

如果你是鱼儿，那么快乐就是一汪清凉的水；如果你是小鸟，那么快乐就是一片湛蓝的天；____，____；____，____。