On the aspect of the energy consuming and the broken difficulty , the tensile broken was advised to be choose . in the pressive strength , shearing strength , bending strength , tensile strength of the mineral , the tensile strength is the weakest 课题中从破碎能量消耗角度考虑，也是从破碎的难易度考虑，选择张拉破碎较为合适，因为从矿物强度角度来讲抗压强度、抗剪强度、抗弯强度、抗拉强度中抗拉强度最弱，这样就易于破碎。
The study accomplished the following tasks : changing the test items and adjusting their difficulty level , investigating the testees ' views about the test items , setting up the scoring criteria , producing the operationalized marking scheme and specifying the scoring procedures 课题组经过两轮试点，完成了5项任务： ( 1 )调整八级口试的题型及难易度； ( 2 )调查考生对考题的评价； ( 3 )制定评分的分项指标及其标准； ( 4 )设计操作性强的评分细则； ( 5 )建立有效的评分步骤。
Firstly , considering the stability , the facility and the wide applicability , the system established the applied platform and set up the internet environment . in this chapter , a tri - layer browser / serve data - accessing pattern was adopted , which is advantage of " thin " client , maintainable system and application extended easily . furthermore it adapts to run on internet and intranet 系统平台选择上，从响应能力、与后端服务器的集成、管理的难易度、信息开发难易程度、稳定可靠性、安全性以及应用的范围和流行程度几方面考虑，系统确定采用windows2000 + iis5 . 0 + sqlserver2000的组合方式。
The present paper will therefore focus on the following issues which have become thorny in the process of implementing the task - based methodology , and as far as this paper is concerned , the methodology in senior high schools : ( 1 ) factors affecting the difficulty level of tasks , ( 2 ) principles concerning the design of tasks , and ( 3 ) common varieties of tasks available to senior high school language teachers 整个教学过程也就是学生用语言完成各种任务的过程。因此，在实施“任务型”教学的过程中，任务的设计就显得尤为重要。本论文主要就高中英语教学中影响学习任务的因素、任务设计的基本原则、任务的难易度以及任务设计的各种类型等问题进行探讨。
