①人民当家作主的权利有制度、法律和物质保障

②人民当家作主的地位正逐步得到确认

③我国在尊重和保障人权方面取得了巨大成就

④广大人民群众享有广泛的民主权利

用数学归纳法证明“1＋2＋2²＋…＋2^n－1＝2ⁿ－1(n∈N_＋)”的过程中，第二步n＝k时等式成立，则当n＝k＋1时，应得到(　　)

    Many people like animals. So they keep(饲养) 1 as pets. Usually people like to keep dogs, cats, fishes and 2 animals as their pets. Many young people keep animals 3 they think these animals are 4. Some old people keep pets because 5children don't live 6 them and they 7 lonely (孤独的).

    Mr. Li is an old man. He is a pet doctor (医生). He is friendly to all people and their pets. People in the neighborhood love 8 very much. People usually call him "The Pet Doctor". When people's pets are sick(生病的), they often ask Mr. Li for 9. Mr. Li can always help the sick pets get well soon. So he is 10 popular in the neighborhood.

成语填色。

唇____齿____