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39. 費雪投影式(Fischer projection)是一種常用的化合物結構表示方法。下列選項中,請問何者 是(2R,3S,4S)-2-bromo-4-methyl-3-hexanol 的正確結構?

34. A: What do you think about reading your kid’s text messages? B: ___________________________ A: That’s fair. I suppose how we approach it depends on age and trust. (A) I think it’s useful at first, but too much surveillance can harm the relationship. (B) I believe kids should never have privacy until they’re 18. (C) I plan to read everything, even their school emails. (D) It doesn’t matter what they write—it’s their phone, their rules.

35. A: I read an article that really made me reflect on what I eat. B: Was it about animal treatment again? A: ___________________________ B: That’s a good mindset. Our choices can make a difference. (A) Yes, I usually skip breakfast before 10 a.m.. (B) Yes, I think I need to be more mindful as a consumer. (C) No, I just like trying new recipes online. (D) No, I was only looking for cheaper meal ideas.

36. A: I’m leaning toward a flip phone to avoid distractions. B: That’s smart. A: ___________________________ B: True, they’re good for basic communication but not much more. (A) It doesn’t have location tracking or any real parental controls, though. (B) It comes with dozens of apps, just like a smartphone. (C) I like that it connects easily to TikTok and Snapchat. (D) I’ll use it to monitor all my child’s private messages.

142. (A) ought (B) should (C) need (D) might

143. (A) bills (B) checks (C) prices (D) earnings