综合写作：
The United States currently has high-speed railway lines on the East Coast of the country. The East Coast high-speed trains have been very successful, and some experts believe that a similar high-speed rail system to connect the cities of San Francisco and Los Angeles in the state of California on the West Coast would have many benefits as well.
First, maintaining roads is expensive, and because of budget constraints, the state of California has had great difficulty in ensuring that the repairs needed to keep the roads in top condition are made. Advocates of the high-speed rail proposal point out that when people who would have driven to their destination take the train instead, there will be less damage to the roads. The amount of maintenance needed on roads will therefore decrease.
In addition, traffic congestion on one of the major roads between San Francisco and Los Angeles is already at record levels, and transportation experts predict that it will double over the next 25 years, clearly, this problem must be addressed. In some areas of the East Coast where traffic congestion has been a problem, high-speed trains have helped relieve the congestion, and they have become the most popular way to travel between some East Coast cities. A high-speed train between San Francisco and Los Angeles could become just as popular and could play a major role in helping to lower traffic congestion.
Finally, high-speed trains are one of the most environmentally friendly forms of transportation. Trains running at a high rate of speed are very fuel efficient about five times more fuel efficient than cars and twice as efficient as regular trains. A high-speed rail line between San Francisco and Los Angeles could eliminate many billions of pounds of harmful fuel emissions produced by car engines and regular trains every year.
Narrator: Summarize the points made in the lecture. Being sure to explain how they challenge the specific theories presented in the reading passage.
听力音频：
学术写作：
Your professor is teaching a class on Education. 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
In today’s context, there’s a growing consensus that education should extend beyond high school and college, encompassing lifelong learning. Imagine you’re a student engaging with this topic. Your input is sought on which specific field adults should focus on for ongoing education. Given this perspective, the question to you is: Considering the shift towards lifelong education, which field of study do you believe adults should prioritize for their continuous learning journey?
Andrew
In my opinion, it’s important for adults to have the opportunity to take foreign language classes as part of their lifelong education. Learning a new language can open doors to different cultures, enhance communication skills, and boost career prospects. Plus, it’s a way to keep our minds active and engaged throughout our lives. So, I believe offering foreign language courses to adults is a valuable way to support their continuous learning journey.
Claire
I think art classes should definitely be available to adults as part of lifelong education. Engaging in art allows us to express ourselves, relieve stress, and tap into our creativity. Even if someone didn’t have the chance to explore art when they were younger, providing these classes to adults can offer them a way to discover new talents, develop new hobbies, and continue growing personally, no matter their age.
