4. 請找出以下 expressions 的 postfix 與 prefix 的 notations。(10 分) (1) (A + B) * C – (D – E) * (F + G) (2) A * (B + C / D) – E

2. Essay Writing: 70% Topic: "The Perfect Day Without Technology" Imagine you have to spend an entire day without any technology—no phones, computers, televisions, or other electronic devices. Describe how you would spend this day from start to finish. Explain why you have chosen these activities and how they would benefit you and those around you. Be creative and detailed in your response. So here below are the detailed instructions about how to write this structured essay: Write an essay, of at least 360 words, in which you describe “The perfect Day Without Technology.” Here, a well-organized essay is expected, with a tripartite structure: Your introduction is supposed to introduce the concept of spending a day without technology, and a thesis statement is expected at the end to state the main ideas to follow. The body should include paragraphs that deal with details about morning activities, plans for the afternoon, and evening activities, all without modern technology. Finally, in your conclusion, you can reflect on the benefits of spending a day without technology, and at the same time summarize the key points of your technology-free day.

4. 請找出以下 expressions 的 postfix 與 prefix 的 notations。(10 分)
(1) (A + B) * C – (D – E) * (F + G)
(2) A * (B + C / D) – E

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