阅读理解

    If you want to live longer and lower the risk of heart disease, a move to the mountains may help. Research by scientists in Greece shows that living in the mountains is good for the heart and longevity(长寿). People living at higher altitude(海拔) have lower possibility of dying from heart disease than those closer to sea level, even if they have factors that could increase their risk. "Residence in mountainous areas seems to have a 'protective effect' from heart disease," said Dr Nikos Baibas of the University of Athens. He and his colleagues suspect that the increased exercise from walking up mountainous area gives the heart a good workout and enables it to cope with lower levels of oxygen.

    Researchers studied the health records and death rates of 1,150 Greeks who lived in three villages near Athens over 15 years. One village was 1,000 meters above sea level and the other two were in low-lying areas. Although men and women living in the mountainous village had higher blood pressure rates and other risk factors than people in the other villages, they had a lower rate of death from heart disease and other causes after a fifteen year follow-up." The contrast was more evident among men than among women," Baibas added in a report in the Journal of Epidemiology and Community Health. Heart disease is one of the world's top killers. Smoking, high blood pressure, raised cholesterol levels, being overweight and a family history of the illness increase the possibility of developing the disease.

下列与青春期第二性征的发育直接有关的是（   ）。

“晒黑族”是热衷于揭“黑”的特殊网民，他们以“只有不想晒的，没有不敢晒的”为口号将政府、社会上不平事披露网上以警示他人。“晒黑族”的行为表明（  ）

①我国公民的主体意识、公民意识的觉醒和提高

②“晒黑族”履行专政职能以维护人民民主，保障人权

③中国政府积极落实公民的政治权利，创新民主形式和渠道

④网络作为群众维权的渠道，有助于推进法制文明建设和社会进步

①伟人并不是他们生而伟大，伟大在于创造和贡献，不在于地位的高低

②他们能够运用自身的品德、才智和劳动，创造出比自己生命更长久、不平凡的社会价值

③他们为子孙后代留下了宝贵的物质财富和精神财富

④他们的一言一行影响着一代又一代的人