综合写作：
Through human actions and loss of habitat, the number of wolves in the United States has dropped substantially over the past 200 years. In large parts of the American West, wolves completely disappeared. Recently environmental researchers have tried to try to restore the wolf population to its former state in some locations by importing wolves from areas where they are still plentiful. However, reintroducing wolves in national parks and rural areas carries several risks.
One problem is that wolves are highly effective predators, and their reintroduction upsets the balance of the local ecosystem. In Yellowstone National Park, for example, the elk population declined by more than 50 percent during the first fifteen years after wolves were introduced. (Elk are large plant – eaters that influence the growth of many plants and provide food for predators other than wolves, such as bears.)
A second problem is that wolves present an economic threat in the areas where they are introduced. For example, there are quite a few livestock ranches that border nature reserves and state parks where wolves have been reintroduced. Wolves have been known to attack large livestock such as sheep. Thus, many ranchers fear that the reintroduction of wolves will result in serious economic losses for them.
A third problem is that wolves present a direct danger to humans. Wolf packs tend to do well in the environments in which they are introduced, so their population grows over time, and eventually they spread into new territory, places where they come into more frequent contact with people. This is especially true in national parks, where people gather to explore and appreciate nature. Introducing wolves to these areas creates a serious risk for the people who visit the areas or live in them.
学术写作：
Instructions: Your professor is teaching a class on education. Write a post responding to the professor’s question. In your response you should:
- express and support your personal opinion
- make a contribution to the discussion in your own words
An effective response will contain at least 100 words.
Dr. Achebe
This week, we’ll be discussing the future of education. Let’s focus now on the following viewpoint: It is no longer useful to spend many years pursuing a traditional, specialized university degree in a single field, such as communications or economics. Instead, it makes more sense for most people to complete several shorter certification programs and earn certificates in, for example, project management, computer programming, graphic design, and so on. Do you agree or disagree?
Kelly
I strongly support this approach because it aligns with the changing preferences of many individuals in the modern world who often wish to switch majors or career paths. Embracing certification programs allows people to explore and pursue fields they are passionate about without the commitment of lengthy degree programs.
Andrew
University education is a superior choice due to its comprehensive and specialized nature. While certification programs offer quick training, universities provide a more in – depth understanding of a subject. They encourage critical thinking, research skills, and a broader knowledge base. University degrees often lead to higher earning potential and career opportunities.
