2008.8.3/2007.6.9 Do you agree or disagree with the following statement? In twenty years’ time, people will lead a more leisurely life.
Main point: Disagree
第三版北极星4 Unit5 ----Longevity: Too Much of a Good Thing?
A doubled lifespan
If scientists could create a pill that let you live twice as long while remaining free of infirmities, would you take it?
If one considers only the personal benefits that longer life would bring, the answer might seem like a no-brainer : People could spend more quality time with loved ones; watch future generations grow up; learn new languages; master new musical instruments; try different careers or travel the world.
For most people, living longer will inevitably mean more time spent working. Careers will necessarily become longer, and the retirement age will have to be pushed back, not only so individuals can support themselves, but to avoid overtaxing a nation’s social security system.
But such changes would carry their own set of dangers, critics say. Competition for jobs would become fiercer as “mid-life re-trainees” beginning new careers vie with young workers for a limited number of entry-level positions. Especially worrisome is the problem of workplace mobility, Callahan said. “If you have people staying in their jobs for 100 years, that is going to make it really tough for young people to move in and get ahead,” Callahan explained.
同学们注意，以上内容给了我们非常好的素材（尤其是标绿部分）。当我们要证明sub point1. 工作压力比现在更大。你能想到用什么方法来有效的论证呢？Maybe你会说以后大家都是高学历者（well-educated），那么工作的竞争压力自然会更大。这个理由大部分同学都能想得到，那么怎么让你的素材比较novel? 赶紧学学以上段落吧！！！
20年后我们会变得更加长寿，这就意味着我们的退休年龄push back了，在这种年轻人不断进入职场，而年长者延迟退休的情况下，是不是竞争压力要更大了呢？同时篇章中许多expressions是我们都可以学习的，eg. mid-life re-trainees人到中年再就业者；a limited number of entry-level positions有限的招聘岗位；
2015.10.11 Do you agree or disagree with the following statement?
It is a waste of money for government to fund space travel and exploration.
Main point: Disagree
Sub point1: 目前地球存在的问题：环境污染越发严重，能源日益减少，人口激增等。所以我们有必要去探索宇宙，找到新的居住地，发现新能源。
Sub point2: Space exploration是非常practical的一项投资，不能说是a waste of money.
Sub point3: 诚然当今社会还有很多没有解决的问题需要政府来处理。这些问题可能比宇宙探索、旅行迫切多了，但是这并不意味着政府做这件事情就是浪费钱。因为如果政府不做就没有人有这个能力了。
第四版北极星3 Unit3----Exploring the Red Planet
MARS: OUR NEW HOME?
If you think you’d like to live on Mars, you may have that possibility by 2023. A Dutch company called Mars One will soon advertise for people interested in colonizing Mars. If you have all the necessary skills—and there are a lot—you could be one of the first colonists to Mars. Are you ready for the challenge?
As a future colonist in one of the six teams, you will go through years of training. If your team is the first team to travel to Mars, your main responsibility when you get there will be to build a place where humans can live. The atmosphere on Mars does not have enough oxygen for humans, and the land is not good enough to grow food. Colonists will have to create an artificial environment on Mars where there is air to breathe and land to farm. Scientists know Earth-like conditions can be simulated on Mars because something similar has already been done in Antarctica, where humans cannot survive outside the created environment.(对火星环境的具体描述&科学家们如何将其改造的适合人类居住。)