Whales originated in the freshwater lakes and rivers of ancient Asia about sixty million years ago.Not until about ten million years later did species of whales develop specialized kidneys enabling them to drink salt water.Although fossil evidence shows that some early whale species that lacked such kidneys sometimes swam in the Earth’s saltwater oceans, these species must have had to return frequently to freshwater rivers to drink.
Which of the following is most strongly supported by the information given
Fossils of whale species dating from between sixty million and fifty million years ago will not be found on continents that were at the time separated from ancient Asia by wide expanses of ocean.
Among whale fossils that date from later than about fifty million years ago, none are fossils of whale species that drank only fresh water.
Fossils of whale species that drank fresh water will not be found in close proximity to fossils of whale species that drank salt water.
The earliest whales that drank salt water differed from fresh-water-drinking whales only in their possession of specialized kidneys.
Between sixty million and fifty million years ago, the freshwater lakes and rivers in which whales originated were gradually invaded by salt water.
LS的几位，你们有没有注意到，这个标题是Which of the following is most strongly supported by the information given?
而不是Which of the following, if true, most strongly supports the conclusion of the argument?
Which of the following is most strongly supported by the information given?是指用原文的信息来证明选项的正确性
而
Which of the following, if true, most strongly supports the conclusion of the argument?是指用选项来证明原文结论的正确性，也就是加强
Which of the following is most strongly supported by the information given?的做法就是要完全符合stimulus内的信息，不能有stimulus内没有涉及的新的内容加入
Fossils of whale species dating from between sixty million and fifty million years ago will not be found on continents that were at the time separated from ancient Asia by wide expanses of ocean.==>符合原文的信息，stimulus说了sixty million years ago开始到Not until about ten million years later 才有了那个很特殊的kidneys，所以说在between sixty million and fifty million years 之间，那个whales是没有办法横跨ocean的，所以就没有fossile可以被对面的continents发现了
Among whale fossils that date from later than about fifty million years ago, none are fossils of whale species that drank only fresh water.==>stimulus没有提到过任何关于only drank fresh water的事情，这个only太strong了
Fossils of whale species that drank fresh water will not be found in close proximity to fossils of whale species that drank salt water.==>和stimulus相反，因为原文已经说了还是有可能进入ocean的，只是需要经常性的会到fresh water水域，所以还是有可能fossile留下的
The earliest whales that drank salt water differed from fresh-water-drinking whales only in their possession of specialized kidneys.==>stimulus只是说有这个kidney的区别，没有说过是only这个区别，only太强了
Between sixty million and fifty million years ago, the freshwater lakes and rivers in which whales originated were gradually invaded by salt water.==>这个gradually invaded by salt water有问题，因为stimulus说的是 return frequently to freshwater rivers to drink，不能做出这种gradually invaded by salt water的推测
所以只有A对作者: happy8young 时间: 2013-2-25 06:36
