阅读资料回答问题：

资料一：尽管人迹罕见的南极洲从未使用过DDT这种农药，那里的企鹅一生也从未离开过南极洲，但人们竟在南极洲的一种企鹅体内发现了高浓度的DDT，其含量比海水中高出百万倍

资料二：在草原上人工种草，为了防止鸟吃草籽，用网把试验区罩上，结果发现，网罩内的草的叶子几乎被虫吃光，而未加网罩的地方，草反而生长良好。

资料三：2011年日本大地震造成的福岛核电站危机曾引发全球对于核泄漏影响的担忧，事发时有人预测如果福岛核电站的放射性物质持续流入海洋，海洋生物的生存将面临威胁，甚至会令海洋生物发生“怪诞变异”。

    The Spring Festival is coming soon. Do you want to have a trip during the Spring Festival? What about going to Beijing and Shanghai? They are big cities with a long history. You can also visit many famous places. Now Shunfeng Club, a travel agency(旅行社), has some tour groups for you this year. You can know more about the tour groups for Beijing by 0312－2345867, and the tour groups for Shanghai by 0311－5368745.

    Mr. and Mrs. Wilson and their children were going to begin their holiday one day, and they had to be at the airport at eleven forty in the morning. "It'll take us half an hour to get there in the car," Mr. Wilson said, "so we must leave before eleven o'clock. Don't be late."

    At ten minutes to eleven, they were busy doing things, except Mrs. Wilson didn't, she was sitting quietly on a chair in the garden and enjoying the sun.

    Her husband and children were very surprised. Why wasn't she busy, too. Mrs. Wilson answered, "Well, before I went to bed last night, I moved all our clocks and watches ahead twenty minutes. So now we can go to the airport quietly, Don't worry, then."