资料：Human resource professionals act as mediators between an organization's management and its workers. This requires wearing many hats It's an HR administrator's job to make sure that employees are working in a safe environment that disputes are settled， and that benefits are understood and administered properly. At the same time， HR is charged with recruiting new employees who will not only fit in personally and professionally but also help the company achieve its business goals. They also represent management when negotiating for benefits with companies administering these benefits and when implementing companywide policies that will ultimately lower costs or boost profits. The needs of HR cover a wide range of tasks and，therefore， require individuals who are good with people in addition to being organized， analytical， business-minded， and heroic multitaskers.
All companies need some kind of HR support The Bureau of Labor Statistics（BLS） expects jobs in HR to grow faster than average for all occupations through 2012. Opportunities will increase as a result of a growing economy as well as a need to replace workers transferring to other occupations or retiring. BLS expects particularly strong demand for training and development and employment， recruitment， and placement specialists， with management， consulting， and employment services firms offering the greatest number of opportunities， thanks to a trend toward outsourcing personnel functions.
You can get the inside edge for a career in HR by strengthening your understanding of business strategy and planning and by specializing in a specific industry. A great way to get started in the field is with practice， look for an internship or an HR assistant job if you're in school or just out. Many HR professionals work their way up. As you develop an understanding of the various career tracks and master the basic skills within the function， you'll be in a great position to rise up the ladder.
According to the passage， HR is required to carry out all the following jobs EXCEPT?
本题的问题是“根据文章，人力资源需要开展以下各项工作，除了_____？”。A选项“确保为员工提供良好的工作环境”；B选项“代表管理层谈判和实施政策”；C选项“帮助实现公司目标和利润提升”；D选项“为了公司的利益招聘有为的新员工”。根据题目中关键词找到主题句，主题句中，A、B、D三个选项均有涉及。故选C。
下列关于公司的表述，正确的是（）
以下各项列举了我国常见气象灾害与其发生地区的对应关系，其中正确的一项是（）
根据电视收视率调査，看体育节目的观众中青年人比中老年人要多。
由此可推断出（）
—种海洋蜗牛产生的毒素含有多种蛋白，把其中的一种给老鼠注射后，会使有两星期大或更小的老鼠陷入睡眠状态，而使大一点的老鼠躲藏起来。当老鼠受到突然的严重威胁时，非常小的那些老鼠的反应是呆住，而较大的那些老鼠会逃跑。
以上陈述的事实最有力地支持了以下哪项假说？（）
疾病控制中心对某校髙中三个年级的学生进行抽样做视力状况调查，抽样的方法为分层抽样（按比例抽样），若高中一、二、三年级学生人数分别为626、703、780，样本容量为84，则应从离二年级抽样的学生人数为多少？（）
