2016年12月4日是全国第16个法制宣传日，也是现行宪法颁布实施34周年纪念日，我国多次把宪法作为法治宣传日的主题，宣传宪法的基本精神和内容。这是因为（    ）

①宪法是国家的根本大法         ②宪法是我国法律体系的总和

③宪法规定公民的一切权利     ④依法治国，首先是依宪治国

依次填入下列横线处的词语，最恰当的一项是（    ）

①“要想骨骼健康，就得补钙”，这已是________深入人心的观念，很多人也把补钙作为一生的计划，殊不知，一味地补钙并不代表可以让骨骼吸收钙、留住钙。

②如今，时代发生了巨变。我们依然要研讨经典，经典之所以成为“经典”，是因为它们经受了千百年的时间考验，其传达的很多道理依然________，依然有旺盛的生命力。

③在香港，旺角弥敦道27号全线恢复行车。不过入夜后，在弥敦道附近的豉油街与西洋菜南街交界处，又有大批示威者________，警员到场维持秩序。

    Elias was a poor black worker in south Africa. The time ____he first met Nelson Mandel was a period of his life .he was twelve years old at that time. Nelson Mandel was a black lawyer to____ he turned for advice .Nelson offered____(guide) to poor black people on their____(illegal) problems. Elias needed Mandel's help____he had little education. The school ____he studied for only two years was three kilometers away .he had to drop out of school because his family couldn't pay the school fees____the bus fare .He couldn't read or write well .After trying hard, he got a job in a gold mine ,____ he didn't have passbook to live in Johannesbug and he worried about ____he would become out____work.

下列作品中深刻地描写封建社会末期的社会生活，揭示封建社会必然崩溃的历史命运的是(   )