读我国人均资源占有量与世界平均水平的比较图，完成下列各题。

当空气污染指数（单位：μg/m³）为0﹣50时，空气质量级别为一级，空气质量状况属于优；

当空气污染指数为50﹣100时，空气质量级别为二级，空气质量状况属于良；

当空气污染指数为100﹣150时，空气质量级别为三级，空气质量状况属于轻度污染；

当空气污染指数为150﹣200时，空气质量级别为四级，空气质量状况属于中度污染；

当空气污染指数为200﹣300时，空气质量级别为五级，空气质量状况属于重度污染；

当空气污染指数为300以上时，空气质量级别为六级，空气质量状况属于严重污染．

2015年12月某日某省x个监测点数据统计如表：

I used to travel by air a great deal when I was a boy. My parents used to live in South America and I used to fly there from Europe in the holidays. An airhostess would take charge of me and I never had an unpleasant experience. I am used to traveling by air and only on one occasion have I ever felt frightened. After taking off, we were flying low over the city and slowly gaining height, when the plane suddenly turned round and flew back to the airport. While we were waiting to land, an airhostess told us to keep calm and to get off the plane quietly as soon as it had touched down. Everybody on board was worried and we were curious to find out what had happened. Later we learned that there was a very important person on board. The police had been told that a bomb had been planted on the plane. After we had landed, the plane was searched thoroughly(被彻底搜查). Fortunately, nothing was found and five hours later we were able to take off again.
根据短文内容判断正（T）误（F）