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【分析解答题】In this new edition, the basic philosophy and outline and the balance between depth of treatment and breadth of subject-matter coverage are unchanged from previous editions. 1. We have tried to preserve these features that users of previous editions have found desirable, while incorporating a number of changes that should enhance the book’s usefulness.
The textbook is adaptable to a wide variety of course outlines. The entire textbook can be used for an intensive course two or three semesters in length. For a less intensive course, many instructors will want to omit certain chapters or sections to tailor the book to their individual needs. The arrangement of this edition facilitate this kind of flexibility.
2. Conversely, many topics that were regarded a few years ago as of peripheral (次要的) importance and were omitted from introductory courses have now come to the fore again in the life science, earth and space sciences, and environmental problems.An instructor who wishes to stress these kinds of applications will find this textbook a useful source for discussion of the appropriate principles.
3. In any case, it should be emphasized that instructors should not feel constrained to work straight through the book from cover to cover. Many chapters are, of course, inherently sequential in nature, but within this general limitation instructors should be encouraged to select among those chapters that fit their needs, omitting material that is not relevant for the objectives of a particular course.

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试题答案：但是，许多几年前被认为是次要的而且一般在介绍性课程中被省略的内容现在又成了生命科学、地质和宇宙科学以及环境问题的重要研究课题。 答案解析：暂无解析 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>