5. take part in / participate in 参加
4. get used to sth./doing sth. 适应…
3. adjust to sth. 调节
2. make a contribution to 对…作出贡献
1. treat …as 把某人看作是
regard sb as think sb to be look on sb as
accept sb as consider sb to be
37. die out 灭绝
Unit 17
36. live on 以吃…为主
35. in huge numbers 大量的
34. have an effect on 对---有影响
33. die out 灭绝