A、Imaging. B、Restructuring. C、Changing. D、Prototyping. D原文中提到，这种思想的核心在于原型法(prototyping)，这个术语来自产品设计领域。如果考虑跳槽，那么去和做着你正在考虑的工作的人员谈谈。

In today’s lecture, you’re going to learn how to find a fulfilling career; you’re going to learn how to better navigate life’s big-moment decisions and kill your "wicked problems" dead.
    How? By training yourself to think like a designer.
    "The question of ’ What do I do with the rest of my one wild and wonderful life?’ is on everyone’s mind, " Mr. Evans said.
    A common mistake that people make is to assume that there’s only one right solution or optimal version of your life, and that if you choose wrong, you’ve blown it.
    That’s completely absurd, Mr. Evans said; "There are lots of you. There are lots of right answers. " "But", he said, "my method was a blind walk. I didn’t have any strategies. I trusted my intuition, but I worried that I didn’t know what I was doing. "
    Central to the philosophy is prototyping, a concept borrowed from how product designers work. Let’s say you’re thinking of changing careers. Interview someone who does the job you’re considering. Better yet, ask to shadow them for a day, or work in the field on weekends. If it feels right, take it a step further; if it doesn’t, move on. "It’s a classic form of design, " Mr. Burnett said. "You build a lot of stuff, you try a lot of stuff. But it’s always less than the whole product. "
    Prototyping big decisions like a career change or a move, meanwhile, guards against blowing up your life to rush headlong into the alluring unknown, or worse, taking no action for years, unhappily. Your whole future and happiness aren’t tied to this one plan working out. You can make mistakes. Failure is good.
    Breaking down the system to its basic parts, as a designer would. Mr. Evans said: "There are only two things we offer in the class; ideas and tools. "
    He added; "If you think with these ideas rather than the ones you had before, and you use these tools, we believe your chance of building and getting what you want will go up. "
    Questions 16 to 18 are based on the recording you have just heard.
    16. What is this recording mainly about?
    17. What is the common mistake people make in life?
    18. What is the similarity between designing a product and changing a job?