Question

阅读理解 　　ZANZIBAR, Tanzania(AP)－Hundreds of dead dolphins were washed up Friday along the shore of a popular tourist place on Zanzibar’s northern coast．Scientists have ruled out poisoning． 　　It was not immediately clear what killed the 400 dolphins, whose dead bodies lay along a 4-kilometer coast of Nungwi, said Narriman Jidiwi, a marine biologist at the Institute of Marine Science in Zanzibar．But the bottleneck dolphins, which live in deep offshore waters, had empty stomachs, meaning that they could have got lost and had been swimming for some time to reorient themselves．They did not die from hungry and were not poisoned, Jidawi said． 　　In the United States, experts were looking into the possibility that sonar(声波定位仪)from US submarines could have caused a similar incident in Marathon, Florida, where 68 deep-water dolphins stranded(搁浅)themselves in March, 2005． 　　The deaths are a blow to the tourism industry in Zanzibar, where thousands of visitors go to watch and swim with wild dolphins．Villagers, fishermen and hotel residents found the dead bodies and told officials．Mussa Aboud Jumba, Zanzibar’s director of fisheries, went on state radio to warn the public against eating the dolphins’ meat, saying the cause of death had not been found． 　　The Indo-Pacific bottlenose, commonly known as dolphins, are the most common species in Zanzibar’s coastal waters, with bottlenose and humpback dolphins often found in mixed-species groups． (1) According to the passage, the bottleneck dolphins ________． [　　] A． are often attacked by submarines B． find it hard to get enough food C． often fall ill at sea D． like living in the deep waters near the coast (2) The underlined word “reorient”(in para．2)means ________． [　　] A． lose their way B． find their way C． look for food D． fight against enemies (3) What can we infer from the passage? [　　] A． The dolphins died because of the sonar from US submarines． B． The dead dolphins cannot be eaten for they are poisonous． C． The US experts are researching sonar． D． The dolphins might have had no food before they died． (4) What would be the best title for the passage? [　　] A． 400 dolphins died along the coast of Nungwi． B． Dolphins are facing increased risks of death． C． It’s necessary for us to protect dolphins． D． Nungwi is famous for many dolphins there．

Answer 1

答案：1．D;2．B;3．D;4．A;
解析：

(1)	由第二段“which live in deep offshore waters”可知。
(2)	它们游了一段时间以便“设法找到出路”。
(3)	由第二段“had empty stomach”可知，它们死前没有进食，故D项正确；专家正在调查来自美国潜艇的声波定位仪，所以A项错误；海豚死因不明，因此不能食其肉，B项错误；C项与文章内容不符。
(4)	文章主要讲的是400只海豚死亡事件。