综合写作：
In recent years, the desire to find a clean, renewable source of energy has led to an increase in the number of wind turbines in the United States. Wind turbines are tall pillars topped with spinning blades, which create energy when they are turned by strong winds. Unfortunately, these turbines are having an unintended consequence: collisions with wind turbines injure or kill many bats during the bats’ annual migrations. The result has been a noticeable decrease in the populations of many species of bats. Researchers have proposed three solutions to save the bats from being harmed by wind turbines.
One solutions is to build wind turbines at sites where they would not interfere with the bats’ migratory patterns. Bats usually follow the same flight path every year when they migrate. These migratory routes could be studied by scientists, who could direct power companies to build new turbines that are not in the paths of the bats’ migrations.
A second solution is to shut down the current wind turbines at night—the time when bats are most active (bats are night animals). The turbines located in the bats’ migratory paths could be shut down at night during the migration period so that the blades would not be spinning when the bats are most likely to fly through the area.
Finally, a third solution involves the use of radar to keep bats away from the wind turbines. Bats can detect electromagnetic waves emitted by radar. Researchers have noticed that bats actually dislike radar waves, they avoid airports and other locations where radar is used. Researchers believe that emitting radar waves around wind turbines would keep bats away from the area entirely, preventing them from flying into the turbines.
听力音频：
学术写作：
Your professor is teaching a class on Sociology. Write a post responding to the professor’s question.
In your response, you should do the following:
- Express and support your opinion.
- Make a contribution to the discussion in your own words.
An effective response will contain at least 100 words.
Dr. Diaz
Many countries are facing budget constraints due to slowed economic growth and increased spending on social services. With limited resources, governments must prioritize how to allocate funding across sectors like education, healthcare, defense, infrastructure, and more. Keeping budget constraints in mind, what areas of spending do you think your government should reduce first in order to balance the budget? Please explain your rationale.
Andrew
I think one way our city could save money without hurting important stuff like schools and roads is to cut down on extra workers at city hall. With money being tight, it seems like we have some people in city jobs that aren’t really needed. If they lay back on some of these extra administrative people through retirement or cutoffs, it could really help the budget without taking away anything important. I’m sure there’s at least some fat they could trim at city hall without hurting the regular services people need.
Claire
I think one way our city could save some money on park costs is by changing the plants in the grass to types that don’t need a lot of care and water. If they use plants that don’t need to be maintained as much instead of fancy flowers and stuff, they wouldn’t have to pay to water and trim them as often. That could add up to decent savings since keeping parks looking nice can take a lot of work. Switching to tougher, lower – maintenance plants seems like an easy way to cut back on how much the city spends to take care of the grass and plants.
