A
As an alternative to online colleges, these online learning platforms tend to be a little more flexible and may even offer more specific or unusual classes you can't find at a traditional college, but it's important that you compare your options to find what's best for you.
Udacity
The programs of the platform mainly refer to web development, programming, cloud computing and data science. Each program includes hands-on practice, real-world applications and examples, individual code(代码) reviews, and real instructors and career coaches who can address your individual needs. It's about $ 399 monthly, or roughly $ 597 if you buy the full four months at once.
MasterClass
Although MasterClass offers more than just creative courses, its well-chosen offerings are the ones that put A-list actors, writers, artists, musicians, and more in the teacher's seat. Most courses have around 20 lessons. Its courses are video-based, with practical advice and demonstrations(示范)mixed in with straightforward lectures, workbooks and class discussions. The price is about $ 15 per month for unlimited access, but you have to sign up for one year at a time.
EdX
Real college courses, created and taught by real college instructors, are available in a variety of fields and topics. The big selling point for EdX is that the majority of their courses are free-but there's a catch. If you're just taking the class for your own learning experience, the free version will probably work, but if you want to have formal verification(认证)for professional reasons, the "verified certificate" option costs about $ 49 per class.
Pluralsight
Designed with working professionals in mind, Pluralsight offers courses in subjects like software development, data science, information security and more. Regardless of how many classes you want to take, the price is about $ 30 per month for a personal plan(you can enjoy a 10% discount for a complete year).
21. What do the programs on Udacity focus on?
A. Sports training. B. Real interviews. C. Art appreciation. D. Computer skills.
22. On which platform can you possibly take most courses for free?
A. Udacity. B. MasterClass. C. EdX. D. Pluralsight.
23. How much should you pay for a one-year learning plan on Pluralsight?
A. About 270 dollars. B. About 324 dollars.
C. About 360 dollars. D. About 384 dollars.
B