As weather patterns have changed, the advantage of laying eggs out of water has decreased, not only for pantless treefrogs but potentially for many species. “Pantless treefrogs can switch between laying eggs in water or on leaves, so they may weather_the_changes we are seeing in rainfall better than other species that have lost the ability to lay eggs in water，” said Touchon. “Being flexible(灵活的) in where they put their eggs gives them more choices and allows them to make decisions in a given habitat that will increase the survival of their eggs.”

　　语篇解读：热带青蛙改变了数千年的生存习惯而跑到水外产卵，其原因是气候的变化导致了它们的进化过程也发生了相应的变化，这是相关专家的一项最新发现。

　　1．According to the first paragraph, ________.

　　A．frogs sometimes eat their eggs

　　B．tropical frogs eat fish and tadpoles

　　C．many tropical frogs lay eggs out of water

　　D．there are 6,000 kinds of frogs in the world

　　答案：C　细节理解题。根据第一段第二句“But many tropical frogs lay their eggs out of water.”可知，热带青蛙不在水里产卵。

　　2．What has happened to the climate in Panama in the last 40 years?

　　A．There were more storms in summer.

　　B．The number of sunny days decreased.

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