答案：1. A
解析：句子意为“随着时间的推移，我剩余的听力下降到了20%，至今仍是如此。”A选项“Gradually I lost more of my hearing until I was 80 percent deaf, as I remain now.”（逐渐地我失去了更多听力，直到我80%失聪，现在依然如此。）符合句意，因为剩余20%听力即80%失聪。B选项“Soon I lost 20 percent of my hearing after I moved to where I'm living today.”（搬到现在住的地方后不久，我失去了20%的听力。）与原文“dropped to 20 percent”（剩余20%）不符。
2. B
解析：“I was hooked”意为“我着迷了”。B选项“I became really interested in doing that after a few weeks.”（几周后我对做那件事变得非常感兴趣。）符合“hooked”（着迷的）含义。A选项“I was only interested in doing that for a few weeks.”（我只对做那件事感兴趣了几周。）与“hooked”意思相反。
3. B
解析：句子意为“这让我放心，他们给我工作是因为我优秀，而不是出于同情。”B选项“Their attitude showed they gave me jobs because they valued my skills, not because they felt sorry for me.”（他们的态度表明他们给我工作是因为重视我的技能，而不是因为同情我。）准确解释了句意。A选项“I was good, so they had pity on me and gave me jobs. This is truly heart-warming.”（我很优秀，所以他们同情我给了我工作。这真的很暖心。）与原文“not out of sympathy”矛盾。
4. A
解析：“Music is not all about hearing.”意为“音乐不仅仅与听觉有关。”A选项“Music requires the use of senses other than hearing, such as sight and touch.”（音乐需要使用听觉以外的感官，如视觉和触觉。）符合句意。B选项“Hearing is not just an important but the most important sense in a DJ's life.”（听觉不仅重要，而且是DJ生活中最重要的感官。）与原句意思相悖。
5. B
解析：“I'm big on talking to the parents.”中“be big on”意为“热衷于”。B选项“I love and really enjoy talking to the parents.”（我喜欢并且真的很享受和父母聊天。）符合该短语含义。A选项“I feel very proud when I am talking to the parents.”（当我和父母聊天时，我感到非常自豪。）与“be big on”意思不符。

答案：creativity
解析：句意“好老师应该鼓励学生用他们的创造力来表达自己，并让他们为自己能取得的成就感到自豪。”“creativity”（创造力）符合语境，指用创造力表达自己。