There is a well known story about three visits to thatch. When Liubei was suffering from the military problems, Zhuge liang helped him in emergency and insisted him in establishing Shu. Like Liubei in this story, I prefer to choose a friend that can give me a hand when I’m in troubles(好像没有s的，固定词组).
Admittedly, having fun with others is a significant goal for pursuing in our limited life. We can forget about a variety of bothers and unpleasant things. Of course, we will be happier in such a relaxed situation and keep a good mood for a while. But having a companion who only have fun with you is enough?（陈述句语序的疑问句好像不怎么见诶？求讨论！） Will your friendship last for a long time? I may（貌似多余） don’t think so. If your partner often finds lots of excuses to reject（to） help you, what will you think? You must be angry and disappointed. Therefore, thisfun-centered relationship is not a wise choice for selecting a friend.
As a saying goes, a friend in need is a friend indeed. Timely help from a company is really important to enhance friendships. I believe that we always hope our friends do us a favor rather than turning around and walking away, because we know that time-tested friendship is more essential for us to cherish. For example, Bill Gates and Paul, even thoughtàthough the latter is not famous and successful as the former, Paul gives Bill huge supports on the development of software. They face（我觉得undergo会比较好，而且应该是过去式哦） those depressing days together and deal with（过去式哦） myriad technological problems day and night. Their pure friendship teaches us a lot about what thing is most crucial to people’s relationship.
Friends who can share joys and sorrows can benefit not only individuals but also the solidity of our whole society. When people get well along with each other and always help the counterparts, our society will be full of love and become more harmonious, as a result（缺了连词）, the whole group will make progresses. For instance, Chenguang Biao, a famous philanthropist in China.（不是完整的句子呀） He is the very person who often gives a timely hand to his friends. To him, all people in China are his friends, and he is willing to offer aids to individuals who are in troubles. While Sichuan was suffering the big earthquake in 2008, he donated numerous necessary equipments and provided emergent funds to save those dying lives. On one hand, he helped them out of the tough situations. On the other hand, he also made a great positive influence to hundreds of thousands of people in China. From this point, we can see misery-tested friends are extremely vital to our society.
Taking all these reasons as I mentioned above, we know that the friend who only shares happy moments is not enough to solidàsolidify our pure friendships, （缺了连词）we need a person who can help us in the hour of needs. Then we can obtain an enduring relationship with him or her.
Thereading passage and the lecture hold opposite opinions toward the topic whetherthe ethanol is a good replacement for gasoline. The speaker illustrates thatethanol is a better alternative for three reasons.
First of all, the professor contradicts the argument in the article thatethanol can’t solve the biggest environmental problems: global warming(用定语从句会不会好些呢？之前看过的冒号后一般接句子~拙见). He illustrates that ethanol is often made of plants like（最好用such as，考过G的同学懂得~）corns.Growing plants can absorb the carbon dioxide in air as their nutrition. Actually,the corns（plants更好？） can remove CO2 from the atmosphere. So, the reason provided in thereading is not convincing.
Regarding the second statement in the passage, more than 60 percentages ofcorns have to be used for 10 percentages of fuel needs and animals haven’tenough food, the lecturer points out the inaccuracy of the reason. He explainsthat ethanol is produced by the cellutrice（介个我当时也没听懂是啥植物）, which is a kind of cell walls andis an inedible part of trees. Therefore, by using this part（再修饰一下part？） to produce ethanolhas nothing with the available food for animals and cannot endanger their life.（nothing to do with, 最后一句觉得最好修改一下表达的可能更准确些~）
Finally, the speaker demonstrates the explanation that ethanol fuel will neverbe able to compete with gasoline on price as nonsense by stating that taxsubsidies from a government are necessary. (意思好像和lecture里的不同？）In fact, if the productions ofethanol increase, the marginal cost will drop, then the price of ethanol willdecline. Meanwhile（这个衔接的好~）, the professor says that if the yields are 3 times（觉得欠妥？直接three times？） greaterthan they are now, the cost of ethanol will drop 40 percentages.
