※ 引述《hann1011 (han)》之铭言： : 215. : Rock samples taken from the remains of an asteroid about twice the size of : the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be : 3.47 billion years old and thus is evidence of the earliest known asteroid : impact on Earth. : A. has been dated to be 3.47 billion years old and thus is : B. has been dated at 3.47 billion years old and thus : C. have been dated to be 3.47 billion years old and thus are : D. have been dated as being 3.47 billion years old and thus : E. have been dated at 3.47 billion years old and thus are : 答案是E : 我选了C 因为印象中dated at + n. ex: dated at 1000 BC : dated to be + adj. ex: dated to be 1000 years old : 检讨的时候对照了CD上面下载的SC考点总结(955精华版)上面也是这样写的 : 请问正确的用法究竟是哪一个呢 : 谢谢 插个话... 小弟当初在美加补习的时候问过莫教授，他的回答是，这句话的结构是： 3.47 billion years old ^^^^^^^^^^^^^^^^^^ ^^^ adv. adj. 所以答案应该选C 但是看看GMAC自己的题目怎麽写：(PP的题目) Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest knwon mammal of the Greater Antilles islands. (D) sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on 依上题的逻辑，GMAC应该是倾向用dated at 的用法 那麽前面那一题答案应该选E 至於到底应该是哪一个对...看你考试时候的灵感吧 --

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