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8. 阿黴素(doxorubicin)是目前常使用的癌症治療藥物,阿黴素有幾個對掌中心(chiral center)? (A) 5 (B) 6 (C) 7 (D) 8

15. 氫原子的可見光譜中,明亮的紅色譜線最可能是由於電子在下列哪一軌域躍遷? (A) 2s → 1s (B) 2p → 1s (C) 3p → 2s (D) 4s → 3p

16. 造成臭氧層破壞的冷媒分子,主要是含有哪一種化學鍵結? (A) O-Br (B) C-Cl (C) O-Cl (D) C-Br

17. Leo: Oh no, I'm out of money again this month! Sherry: How did that happen? Didn't you plan your budget? Leo: Not really... I usually just spend what I have without thinking ahead. Sherry: That's why _________ It helps you avoid problems and get ready for the future. (A)it's necessary to manage your finances early. (B)you should spend your money once you earn it. (C)it's acceptable to think about money until later. (D)you can ignore budgeting when you are young.

18. Amy: Hey, did you see that influencer's new post? She's promoting a skincare product. Bill: Oh yeah, I saw that._________ . Amy: I feel the same. I had an awful experience with her. I bought perfume that she recommended, and it smelled nothing like what she said! Bill: That's disappointing. I guess we have to do some research before buying things online! (A)She's given really useful skincare routine suggestions. (B)It's getting hard to know whether influencers' reviews are real. (C)Her video went viral in just a few days with thousands of comments. (D)The price was more reasonable than what's sold on the official website.

19. Customer: Excuse me, I'm ready to order, but I don't see any menus here. Waiter: Oh, we've switched to a QR code system. Just scan this code with your phone to view the menu and place your order online. Customer: Oh, I didn't know that. _________.  Waiter: No worries! Let me grab you a printed menu right away. You can still order with me at the table. (A)I don't have my phone with me today. (B)I prefer using digital menus over paper ones. (C)I have the restaurant's app installed on my phone. (D)I've already charged my phone to a full battery.