题目

Do you find getting up in the morning so difficult that it’s painful? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle. During the hours when you labor through your work you may say that you’re “hot”. That’s true. The time of day when you feel the most energetic is when your cycle of body temperature is at its peak. For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has discovered why this is so, but it leads to such familiar monologues (自言自读以下材料，完成52～54题。 材料一：西气东输工程是中国标志性工程，整个工程横贯中国东西部，沿线经过新疆等十个省市。西气东输工程全线建成投产，是中国管道建设史上的重要里程碑。 材料二：西气东输工程路线图(下图)。 52．目前正成为我国西部新的石油基地的盆地是    (    )     A．塔里木盆地     B．准噶尔盆地      C．柴达木盆地     D．四川盆地 53．“西气东输”管道线路的走向所考虑的主要经济因素是（    ）     A．地形类型    B．城市分布     C．气候条件    D．交通线路 54．有关西气东输工程的说法，不正确的是    (    )      A．能积极地推动新疆及沿线地区的经济发展     B．加速改善东部地区的能源结构并促进产业结构的调整     C．缓解东部地区能源紧张的矛盾     D．我国地势西高东低，沿管线各自然带大致呈垂直地带性分布