17. until 朋友陪我走到公交站台，一直等到公交车到来。 18. sitting 现在分词做宾补，表示正在进行。 19. pretended 考察时态。
20. mentally 修饰形容词，用副词。太基础。
21. whom 本句为“介词+关系代词”引导的定语从句，表示人用whom，表示物用which，介词的选择根据
动词搭配，本句为talk to
22. they 本空稍难，易误填he，是谁“几分钟后走开并坐在我的附近，显得很恼火”？是那个 “mentally
disabled man” 吗？NO! 这里应该是 “other people”，理由是：“After a while I rose from my seat and walked to the front of the bus. I sat next to the man and introduced myself.” 23. on on his own = by himself 24. an have a conversation 25. all all of us 我们大家。 阅读理解
26. A. 依据为：I see it every day when people hold doors for me, pour cream into my coffee, or help me to put
on my coat. And I have discovered that it makes them happy.
27. D. 依据：but sometimes I feel sad because those who appear independent miss the kindness I see daily. 28. B. 依据：When I put on my flashlights,到But instead of getting impatient and angry, they waited, knowing
the driver in front of them was in some way weak.
29. C. 依据：More often, it would be better if we don?t pretend we feel strong when we feel weak or pretend that
we are brave when we are scared.
30. B. 通过自己的experience 谈了 “weakness brings out the kindness in people”的观点。 31. D. get along swimmingly意为关系顺畅。
32. C. 依据：fighting were observed in 10% of the homes. One reason for this is probably that some of their body
signals were just opposite.
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33. C. 依据：researchers observed a surprising behaviour. They are learning how to talk each other?s language. 34. B. suggesting that the two may have more in common than we previously suspected.与less different than we
thought 同义。
35. A. 通读全文不难判断：猫狗且能和谐相处，人类有何不可？
36. A. 依据：as it would allow me to wear a tie and go by the name of Mr. Davis. 37. C. 依据：I sounded not like a thoughtful professor, but rather a 12-year-old boy.
38. D. 依据：I handed out the cards, and the students wrote down their names and fastened them to their breast
pockets as I required
39. B. 依据A terrible silence ruled the room, and seeing no other opinions
40. A. 从I had imagined that I would sit at the edge of the desk, overlooking a forests of hands. Every student
would yell. “Calm down, you?ll all get your turn. One at a time, one at a time!” 到 A terrible silence ruled the room, and seeing no other opinions.可以看出作者很失望。
41. B. 从the past decades has seen more and more forests disappearing and globe becoming increasingly warm.
可知harmful是因为有A、C从而导致D，故选C
42. C. 从and is spending a huge amount of money making electric cars and high-speed trains.可知。中国只是
has set its mind on leading that market,而不是is the leader of the low-carbon market，故不选B。 43. D. targets for saving and reusing energy.与encourage energy conservation呼应
44. A. 从末句话That is no small task, but it offers abundant new chances for sustainable product industries.可
断。
45. D. 从主题句可知：People now realize that this unhealthy situation must be changed, and that we must be
able to develop in sustainable (可持续的) ways.
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