2014年3月13日，***在答记者问时指出：“我们要全面深化改革，但是也要抓牵牛鼻子的改革，在重点领域要有所突破。今年我们还要继续推进简政放权，让市场发力，有效规范地发挥作用；还要把财税金融改革作为重头戏，包括给小微企业减免税费方面有新的举措，给市场助力；以结构改革推进结构调整，深化国企改革，发展混合所有制经济，放宽市场准入，尤其是在服务业领域，像医疗、养老、金融等，让市场增强竞争力。”从哲学上看，上述材料表明（   ）

①要坚持两点论与重点论相统一②事物的性质是由矛盾的主要方面决定的③要重视量变，但更要重视质变④要用系统优化的方法解决问题

航天员在完全失重的太空轨道舱中进行体能锻炼，下述活动中可采用的是   〔    〕

十二届全国人大五次会议上，近3000名全国人大代表审议并表决通过了政府工作报告、全国人大常委会工作报告、最高人民法院工作报告、最高人民检察院工作报告等，通过了民法总则。这说明（    ）

若﹣2xy^m和xⁿy³是同类项，则m和n的值分别为（   ）

阅读下面材料，在空白处填入适当的内容(1个单词或括号内的单词的正确形式)。
    Earthquakes are quite common. In fact, thousands of earthquakes happen each day. Most of them are ____ weak to feel, though. During a big earthquake, there is often a big noise first. Then the earth shakes ____(terrible) and many houses fall down.
     As one of the most deadly natural  ____（disaster) in the world, earthquakes often result in many people being injured or killed. In 2008, a severe earthquake hit China's Sichuan Province, which____(kill) more than 80,000 people there.  
    Besides, the great damage and deaths caused by the earthquake____(it), other accidents such as fires often follow.____ (much) buildings may be damaged and more deaths may be caused.
    For centuries, man have been making studies of earthquakes. About 2,000 years ago, for example, a Chinese scientist named Zhang Heng invented a machine, which could find out from which direction the earthquake waves came. With the rapid ____(develop) of modern science and technology, we now know a lot more about earthquakes. However, scientists still have
difficulty ____ (predict) exactly when and where ____earthquake will happen, and can't stop it ____happening.