物体受1N的水平推力作用处于静止状态，受到的摩擦力为____ N，2N的力没推动，此时的摩擦力为____ N，5N的推力物体做匀速直线运动，受到的摩擦力为____ N，10N的推力物体继续运动，受到的摩擦力为____ N.

创新精神是以改革创新为核心的中华民族精神的重要内容。（   ）

    A recent study, while showing a generally positive attitude toward science, also suggests a widespread worry that it may be "running out of control". This idea is dangerous.

    Science can be a force for evil as well as for good. Its applications can be channeled either way, depending on our decisions. The decisions we make, personally or collectively, will determine the outcomes of science. But here is a real danger. Science is advancing so fast and is so strongly influenced by businesses that we are likely to believe whatever decisions we come to will make little difference. And, rather than fighting for the best possible policies, we may step back and do nothing.

    Some people go even further. They say that despite the moral and legal objections, whatever is scientifically possible will be done-somewhere, sometime. They believe that science will get out of control in the end. This belief is dangerous too, because it fuels a sense of hopelessness and discourages then from making efforts to build a safer world.

    In our interconnected world, the lack of agreement in and out of the world of science can lead to the failure to control the use of science. Without a common understanding, the challenges of "controlling" science in this century will be really tough. Take human cloning for example. Despite the general agreement among scientists on its possible huge impact on traditional moral values, some countries still go ahead with the research and development of its related techniques. The outcomes are hard to predict.

    Therefore, discussions on how science is applied should be extended far beyond scientific societies. Only through the untied efforts of people with hope, can we be fully safe against the misuse of science and can science best serve mankind in the future.

根据课文《负荆请罪》的内容填空。

 ①“负荆请罪”这个成语出自____，故事又称____。主人公是____，它的意思是____。

②通过学习，我们认识了____的廉颇，____的蔺相如。