Question

7．A seabird named Lydia recently made a 26-day nonstop（不间断的）journey of about 2，500miles，just to search for food for her baby．She is fitted with a satellite tracking device（卫星跟踪仪）．Her trip started on Oct.18from Christmas Island in the Indian Ocean．The trip is known as the longest nonstop journey by one of these endangered seabirds．
Before that，this kind of birds was known only to fly a few hundred miles from where they live，staying away for just a few days at a time．They usually fly over the sea．The Scientists feel it strange that Lydia made such a long，nonstop Journey and flew overland．So the above facts raise some serious questions about efforts to stop the decline（减少）of the birds．The number of the birds，has fallen by l0 percent over the past 20years．
Besides，the scientists are surprised that she was away from her baby for such a long time．They wonder why she needed to go that far．Maybe it shows that fish resources（资源）around Christmas Island are not large enough now．That might explain the slow decline of the bird--sea pollution is serious．
86．Why did Lydia make such a long and nonstop journey？Because she wanted to search for food for her baby．
87．How far does this kind o f birds usually fly at a time？They usually fly a few hundred miles at a time．
88．What do you know about the number of this kind of seabirds？The number has fallen by 10 percent over the past 20 years．
89．What do the scientists think Lydia's long journey may show？Fish resources around Christmas Island are not large enough now．
90．What can we learn from Lydia's journey？We should try to protect our environment．

Answer 1

分析 一种叫"Lydia"的海鸟为了给孩子们找食物，不远千里穿越陆路．这说明了海污染越来越严重，海里的鱼类越来越少，而海鸟的数量也在逐年减少．

解答 86．Because she wanted to search for food for her baby． 细节理解题  根据"A seabird named Lydia recently made a 26-day nonstop（不间断的）journey of about 2，500miles，just to search for food for her baby"可知，它不远千里只是为了给孩子寻找食物，故答案为Because she wanted to search for food for her baby
87．They usually fly a few hundred miles at a time． 细节理解题  根据"this kind of birds was known only to fly a few hundred miles from where they live"可知，这种鸟通常只飞几百英里，故答案为They usually fly a few hundred miles at a time
88．The number has fallen by 10 percent over the past 20 years．推理判断题  根据"The number of the birds，has fallen by 10 percent over the past 20 years．"可知，鸟的数量在过去的二十年里减少了百分之十．故答案为The number has fallen by 10 percent over the past 20 years
89．Fish resources around Christmas Island are not large enough now．细节理解题  根据"Maybe it shows that fish resources（资源）around Christmas Island are not large enough now．"可知，鸟的长途飞行说明了海里的鱼类数量不够多了．故答案为Fish resources around Christmas Island are not large enough now
90．We should try to protect our environment．  推理判断题  根据"That might explain the slow decline of the bird--sea pollution is serious"可知，由于海水污染严重，鸟儿的数量也在下降，所以我们应该保护环境．故答案为We should try to protect our environment

点评 做这道题时要先通读全文，弄清短文大意，然后根据相关句子写出正确答案，最后仔细检查．