正如前面同学说的,这是conclusion题,不是support题。 无法从题中信息推出50min后的都只和淡水。相反,题中已经告诉在10min后,whale是喝海水的。 Among whale fossils that date from later than about fifty million years ago, none are fossils of whale species that drank only fresh water.
这道题感觉从题目问法到题干的设置都考察了阅读理解和细心程度。 1.Which of the following is most strongly supported by the information given?仔细看清题目是结论,must be true. 2.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. sixty years age ten million years later 正好对应a选项中的dating from between sixty million and fifty million years ago 3.lakes and rivers of ancient Asia 和 a 选项中的at the time separated from ancient Asia by wide expanses of ocean 表明一个是淡水一个是咸水. 综上,题目中说六百万年前 whale在淡水中,五百万年后在咸水中,因此直接支持a选项中的六百万或五百万年前海洋(咸水)中没有化石。