C
Today is Saturday, it's late at night. Bob is lying on his bed and he's counting sheep, he couldn't sleep because his neighbors are making a lot of noise and Bob is very angry. There are many people live in Flat 502, they are dancing and singing, maybe they have a party now. The old woman in Flat 506 is practicing the violin. She is in a music club, she plays violin four times a week. The teenagers in Flat 503 are listening to loud rock music (摇滚乐). The dog in Flat 504 is barking. And the people in Flat 505 are having a big argument (吵架).
It's midnight now, Bob is so sleepy and tired. What a terrible night!
()9. Bob's neighbors are .
A. angry
B. sleeping
C. noisy
D. singing
()10. What are people in Flat 502 doing?
A. Singing.
B. Dancing.
C. painting.
D. A and B
()11. How does Bob feel now?
A. Happy.
B. Tired.
C. Excited.
D. Amazed
()12. Which of the following is TRUE?
A. The teenagers in Flat 502 are practicing violin.
B. The people live in Flat 505 are painting.
C. Bob should quarrel (争吵) with his neighbors.
D. We can't be noisy at night.

9. C 10. D 11. B 12. D

【解析】
9. 根据文中“he couldn't sleep because his neighbors are making a lot of noise”可知，Bob的邻居们很吵闹，故选C。
10. 由文中“there are many people live in Flat 502, they are dancing and singing”可知，502的人在跳舞和唱歌，A和B都正确，故选D。
11. 根据“It's midnight now, Bob is so sleepy and tired.”可知，Bob现在感觉疲惫，故选B。
12. A选项：练小提琴的是506的老妇人，不是502的青少年，错误；B选项：505的人在吵架，不是画画，错误；C选项：文中未提及Bob应该和邻居争吵，错误；D选项：结合全文邻居深夜吵闹影响Bob休息的内容，可推断出晚上不能吵闹，该选项正确，故选D。
【答案】
9. C；10. D；11. B；12. D
【知识点】
阅读理解细节查找、文意推理判断
【点评】
本文以Bob深夜被邻居噪音困扰为场景，题目以细节题和基础推理题为主，考查学生定位原文关键信息、进行合理推理的能力，内容贴近生活，难度较低。
【难度系数】
0.8