20年后我的生活英语作文80字

发布网友发布时间：2022-04-28 17:07

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热心网友时间：2022-06-19 21:27

Secondly, the two separate studies were done seventy-five years apart. There is no evidence that the two studies were concted in a similar manner over the same ration of time or even over the same exact areas of Yosemite National Park, or that the exact same study methods were used. For example, perhaps the first study lasted over an entire year and was concted by twenty-five experts in amphibious biology, resulting in the finding of seven species of amphibians in abundant numbers. By contrast, perhaps the second study was concted over a period of one week by a lone high school student as a school science project. The writer offers no basis on which to compare the two studies, leaving it open as to whether the two are truly comparable in their breadth, scope and expertise.