［精品文档］：科技英语综合教程编写-教参(含课后答案).doc

简介：科技英语综合教程辅导书 Unit 1 Sources of Energy Text A Petroleum Sentence structure analysis 1. Instead of originating in accumulating woody matter, petroleum may be the product of the accumulating fatty matter of ocean organisms such as plankton, the myriads of single-celled creatures that float in the surface layer of the ocean. (Para.2) 石油，并不是来自于..