如图所示是条形磁铁与通电螺线管之间的磁感线分布情况，请标出磁感应线的方向，并画出螺线管的绕线．

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阅读下面一段文字，根据拼音写出相应的汉字。

      远望，常常能产生美妙的遐想，连绵的山luán____，是大地的臂膀；江河的尽头，即将迎来游子归bó____的双桨；浩瀚的星河，映照着人类智慧的光芒……远望自己的人生，还有许多惊喜，等待我们翻开guǐlì____的篇章。

根据短文内容，选择正确答案。

    A man lived in a village. He had an old cat at home. The cat couldn't run fast and bite，because she was so old. One day, when she saw a mouse, she jumped and caught it. But she could not bite it. The mouse got out of her mouth and ran away.

    Then the man became very angry and began to beat the cat. The cat said, “Don't beat your old servant. I know I'm old and can't kill a mouse. But I have worked for you for many years, and I still want to work for you. Be kind to the old, and remember what good work they did when they were young."

    When the man heard that, he realized that he was wrong.

野兔在草地上以18m/s 的速度向前方54m处的树洞奔逃，秃鹰在野兔后方110m处以40m/s的速度贴着地面飞行追击野兔.通过计算说明野兔能否安全逃进树洞？