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首先 致歉 因为没能找到题号~ According to analysts, an alliance between three major personal computer companies and most of the nation's largest local telephone companies would enable customers to receive internet data over regular telephone lines with speeds much higher than is currently possible. a. with speeds much higher than is b. with speeds that are much higher than are c. at much higher speeds as are d. at much higher speeds than that e. at speeds much higher than are 答案 e are 哪来的... 和前面无法对称阿 Scientists have dated sharp-edged flakes of stone found in the fine-grained sediments of a dry riverbed in the Afar region of Ethiopia to between 2.52 and 2.60 million years ago, pushing back by more than 150,000 years the earliest date when it is known that humans made stone tools. A. when it is known that humans made B. at which it is known that humans had made C. at which humans are known to have made D, that humans are known to be making E. of humans who were known to make 答案e 但是 date of humans 很别扭阿.。。。 虽然其他肯定不对... 求解答... 谢谢
[此贴子已经被作者于2007-8-15 20:55:59编辑过] | 
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发表于 2007-8-15 17:14:00
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