This trend away from dissection is largely driven by groups such as people for the ethical treatment of animals peta and the humane society of the united states , which encourage students to oppose the practice , arguing that animals used for dissection suffer during their capture , handling and killing , and that the practice thus devalues animal life 这种趋势多是由保护动物团体所推动，譬如美国人道对待动物协会peta与美国人道协会humane society of the united states等团体。这些团体鼓励学生反抗解剖，他们主张那些用于解剖的动物在被捕处理与宰杀过程中，将饱受折磨痛苦，他们并且补充说，该项学习会贬抑动物的生存价值。
Regarding pi1 - 2 oil bearing group in the polymer flooding well pattern in the north part of the north section in lamodian oil field , as the target pay zone , this paper has firstly drawn the sedimentary microfacies maps of each time unit by means of the principle of architecture - element analysis and correlation method of sand member in fluvial - delta depositional system . lt gives a sound geological foundation for classification of plane flow unit . at the same time , this paper has classified vertical flow unit 首先，本文以喇嘛甸油田北北块聚合物驱井网葡i1 - 2砂岩组为研究目的层，应用储层建筑结构解剖的知识和河流-三角洲相油层对比方法，绘制了各沉积单元的沉积相带图，为平面流动单元的划分提供了地质基础，同时，划分了垂向流动单元。
Based on the regional geologic survey on the scale of 1 / 250 000 , coupled with geological , geochemical and geophysical investigations in some key regions , this dissertation summarized the tectonomagmatic evolution and mineralization of the mid - gangdise area . with respect to tectonic evolution , the gangdise belt has experienced a multi - stage evolutional history since mesozoic , including oceanic crust subduction , arc - continent collision , intracontinental subduction and collision , and strike - slip and block uplift 论文以新一轮1 ： 25万区域地质调查为基础，在对关键区段重点解剖的基础上，结合地球物理、岩石化学、地球化学、沉积作用、变质作用、构造演化和成矿作用的研究成果，对冈底斯中段的构造岩浆演化与成矿作了较系统的科学总结。
