综合写作：
1.文章提到3个减小coal burning的污染1.提高反应效率，加压或者升温。所以在long run上来看可以减少污染。但是听力反驳说人口增长都有30%，你提高碳的燃烧率才10%
2. 用水冲洗煤炭，除掉硫化物就不用有二氧化硫污染环境. 但听力反驳说这只是把硫化物转移到水系统,会污染河流和湖泊
3. 收集燃烧时排出的二氧化碳。教授反对说现在收集二氧化碳的技术还未成熟，且成本太高，而且一旦泄露会污染环境
独立写作：
Do you agree or disagree with the following statement? Patience is not usually a good thing and we need to take actions at once
“Patience is a virtue” is a frequently used saying. In many cultures and society, patience is considered an important principal of good manners and social customs. However there are many circumstances where immediate action is required and patience can be a detriment.
Another expression about patience goes, “Good things come to those who wait.” The philosophy behind this is that if you are patient and wait to assess the situation before you act, you will be rewarded. There are many instances where this principle does not apply. Take people who invest in business for example. When Facebook was first started, it was seen as an underdog compared to the other internet networking giants like Yahoo. When the company started up, many people did not invest because they wanted to wait and see how the company got along. There were a few people that did not wait, and now they are worth billions of dollars. Sometimes while waiting for the opportune moment, you miss the biggest opportunities. In the case of business ventures, good things come to those who act.
Politics and international relations is another area that most people say require patience. However there are several instances in history that prove a patient country sometimes regrets waiting. During the 1930s, for example, Hitler became increasingly aggressive towards Germany’s neighboring countries. All of Europe and even the League of Nations were reluctant to act, thinking that if they waited and appeased Hitler, then Hitler would eventually stop. In retrospect, everybody agrees that rather than patiently appeasing Hitler, countries should have acted. World War II would have been very different if countries had taken immediate action.
There are instances in international relations when quick actions have resulted in disastrous results. Take for example the U.S. War in Iraq. The U.S. Government at the outset of this war regarded this as a “pre-emptive strike” against Iraq and its Weapons of Mass Destruction program. The reasoning behind this was that if the U.S. waited to see if Iraq was actually developing these programs, then the consequence would be Iraq attacking the U.S. So the U.S. and its allies went to war in Iraq and they did not find any weapons. Their hasty actions resulted in the deaths of thousands of Iraqi civilians and a long drawn out war. Sometimes being patient is a good thing when it comes to military actions.
Although there are many instances when patience is necessary, there are many occasions when immediate action is required.
Do you agree or disagree with the following statement? Patience is not a good thing; we should take actions at once.
Adults and teenagers alike have to make choices and decisions every day. Some people claim that it is always recommendable[U1] to make choices and decisions fast, believing that by doing so people will not miss out [U2] valuable opportunities; while others argue that it is always desirable[U3] to be patient. As far as I am concerned, there is some element of truth in both sides, but I maintain[U4] that to have a satisfying[U5] result, people should know when to make quick decisions and when to consider things very carefully. On the one hand, people should make quick decisions and sometimes people who take actions at once are regarded as[U6] courageous and wise. Several months ago my mom told me that the price of gold[U7] was declining, and she highly recommended[U8] me to buy some gold. After verifying[U9] the information, I withdrew[U10] some of my savings from the bank and bought some gold. Last week, I joyfully found out that the gold price took a steep climb[U11] ! Thinking that I could make a big profit, I sold out all my gold without delay[U12] . My mom and I are satisfied with the decision because yesterday the price of gold showed signs of declining. If I had not taken actions at once, I wouldn’t have made such a big profit.
On the other hand, however, some decisions, like buying a big house or choosing a career, do demand[U13] comprehensive[U14] research and elaborate [U15] plan. Under these circumstances[U16] , people should take their time[U17] and think very carefully before action. I still remember that after graduation, I was confronted with[U18] a knotty[U19] problem: I could either go to a bank or teach English at a school. At that time I had no work experience [U20] and I did not know which career suited [U21] me better. Thanks to my father, he gave me a chance to work in his bank for 3 months and then I found an opportunity to teach at a school in a small village. Finally I found out that I am cut out to be [U22] a teacher.
From the above discussion, I firmly believe that to simply say that it is always good for us to do things quickly or slowly is too superficial[U23] . Sometimes we must take actions immediately; sometimes we need patience. What we should do is to develop[U24] our ability to know when to act at once and when to look before we leap.
以上是
(编辑：Sally)
