Directions: You have 20 minutes to plan and write your response. Your response will be judged on the basis of the quality of your writing and on how well your response presents the points in the lecture and their relationship to the reading passage. Typically, an effective response will be 150 to 225 words.
Summarize the points made in the lecture, being sure to explain how they respond to the specific concerns presented in the reading passage.
The Salton Sea in California is actually a salty inland lake. The level of salt in the lake's water—what scientists call its salinity—has been increasing steadily for years because the lake's water is evaporating faster than it is being replaced by rainfall or rivers. If the trend continues, the lake's water will soon become so salty that the lake will be unable to support fish and bird populations. The lake would then become essentially a dead zone. Fortunately, there are several ways to reverse the trend that is threatening the lake's health.
One option is direct removal of salt from the lake's water in special desalination facilities. Water from the lake would be pumped into the facilities and heated. This would cause the water to evaporate into steam, while salt and other materials dissolved in the water would be left behind. The steam would then be cooled down and returned to the lake as salt-free water. Gradually, the high salt levels would be reduced and the lake’s overall health would be restored.
Another possible solution is to dilute the salt level in the lake with water from the ocean. Since water in the Pacific Ocean is 20 percent less salty than water in the lake, bringing ocean water into the lake would decrease the lake’s salinity. The ocean water could be delivered through pipelines or canals.
Yet another solution would be to control the lake's salinity by constructing walls to divide the lake into several sections. In the smaller sections, salinity would be allowed to increase. However, in the main and largest section, salinity would be reduced and controlled by, among other things, directing all the freshwater from small rivers in the area to flow into that main section of the lake.
Now listen to part of a lecture on the topic you just read about.
It would be great if we could stop the lake salt level from increasing and save its fish and bird populations. But the solutions you just read about aren't realistic or practical.
First, sure, taking salt out of the lake by desalination would reduce salinity, but it would present some serious problems as well. For example, as you've read, water pumped into desalination facilities evaporates and leaves behind solid materials that would dissolve in the water. Well, the solid materials that desalination facilities leave behind would pose a health risk. The materials will be mostly salt, but they would also include other types of chemicals. Some of the chemicals would be toxic, like selenium. If the wind spread selenium and other chemicals into the air and people breathe them in, that would be very dangerous to people's health.
Second, the idea of bringing ocean water into the lake, again, this would reduce salinity. But as you've read, it would require constructing pipelines or canals. The problem is that the local government may not have enough resources to pay for such major construction. The nearest shoreline of the Pacific Ocean is 100 kilometers away. Pipelines and canals are very expensive to build over such long distances.
As for the third solution, dividing the lake into sections by building a system of walls. Well, that's unlikely to work for very long. That's because the Salton Seas is located in a region that experiences frequent and sometimes intense geological activity, like earthquakes. That activity would almost certainly destroy the walls separating the different sections. So while this solution might work for a short while, the walls would likely collapse the first time there is a major earthquake. And water from the special sections with high salinity would mix back in with the low-salinity salinity from the main section.
The Salton Sea in California is facing a problem that the salinity has been increasing for the rapid evaporation rate. The reading passage has given three solutions while the listening part reveals the leak of them one by one.
The first option is to remove the salt directly from the lake’s water by a special desalination facility. However, the professor argues that this method is very likely to cause health problems. As the water in the desalination facilities evaporates, solid materials would be left behind, which contain toxic chemicals, such as selenium. Then, separating would allow these chemicals to be spread by wind, which may pose a threat to people’s health.
The second solution is bringing ocean water to the lake to dilute the salt level. The professor finds faults with this method by saying that this solution would be quite unrealistic in consideration that the government may not have enough money to build any pipelines or canals. Moreover, the nearest shoreline is 100 kilometers away, so the construction may cost a lot of money.
The last way is to divide the lake into several sections by building walls. The salinity in smaller sections would increase while in largest sections, by directing fresh water from small rivers, the salinity would be controlled. However, the professor refutes that this measure is just provisional, since the Salton Seas is located in place where the geological activities are frequent and intense. Water from the smaller sections may mix back in the main section so this solution will also fail very soon.
Directions: Read the question below. You have 30 minutes to plan, write, and revise your essay. Typically, an effective response will contain a minimum of 300 words
Do you agree or disagree with the following statement? Governments should spend more money in support of the arts than in support of athletics such as state-sponsored Olympic teams.Use specific reasons and examples to support your answer.
With the accelerating development of our society, arts and athletics have been playing two important roles in our daily life. It's hard to judge which has more significance. While some people are advocators for that governments should spend more fund in support of the arts, there're also many people believe athletics worth more attention and investment. From my perspective, I disagree that the governments spend more money on supporting arts.
First, supporting the athletics can provide more chances and better environments for the athletes. Government has influence to the public. When government indicate that they would like to put more money on supporting athletics, that also means they support that citizens pay more energy and income on sports. Sports means more than arts to some degree, and the activities can involve almost all kinds of people even handicaps. For instance，if the government would like to cultivate athletics such as sportsmen from Olympic teams, the influence of a gold medalist is huge. Children would arouse their interest in sports for the athletes have set a good example. Sportsmanship could be a good teacher for teenagers, they need somebody to tell them when facing the difficulties and sufferings, they should overcome them with their diligence, perseverance and strong belief. Only if the sports are paid attention by nation and citizens，the country would develop better with their strong and healthy people.
Let's talk about why we don't spend more fund on the arts. As I have mentioned, sports are highly educational, while arts are not so appropriate to education. It's known that arts are somehow obscure and pluralistic. An art work may contain different and several meanings，and some reflect the dark side in the society, which is too early for the children to know, and teenagers without right directions would imitate some of the actions.
Also, there's a saying that‘Artists are inspired by the suffering.' Vincent van Gogh was a best example. He lived cleanly and poorly，with no money, no women ,or applause. While Auguste Rodin was hiring beautiful naked models dancing in the studio, Vincent has no money to hire models, so he can only paint towards the mirror again and again, lone and bitter artists can figure their spirit on the paper, in their work，we read more than beauty，but a thought，an attitude , an era. Roman Rolland has said ‘Poverty is not only a mentor of the mind, but also a tutor of style. It makes spirit and mental to be indifferent towards fame and fortune.'
To maximize the profit, government will tend to invest the money on a more profitable project. If we invest the same money on an art exhibition and a sports competition, that would be very easy to tell that the sports competition will appeal more audience and attract more attention. Sports will become a culture if we treated it seriously, like Olympics, which symbols freedom and equality. And if a country, unfortunately was involved in a war, the museum and artworks are very likely to be destroyed, these masterpieces almost are the entire worth of the arts, but sports don't. Like Olympics, it was suspended during World War，but a year after that, Olympics returned.
Finally, the relation between artists and athletes are interactive. Athletes represent the national physical strength, artists represent the national mental strength. Neither of them are unimportant. But as for a country, we need our people physically strong first, we hope to let the athletes be our good examples, when we see our athletes fight against the rivals, we feel uniform, a kind of national cohesion.
In conclusion, governments should spend more money in support of the athletics, such as state-sponsored Olympic teams and so on. And athletics field can perform better than now if we pay more attention to it.