如图，已知：射线PO与⊙O交于A、B两点，PC、PD分别切⊙O于点C、D．

读“北方地区图”，回答下列问题．

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根据拼音写汉字。

       王羲之《兰亭序》帖的用笔以中锋为主，间有侧锋；笔画之间的萦带，xiān____细轻盈，笔断而意连，提按顿cuò____恰到好处；整体布局上，前几行较收liǎn____，中段逐渐放开并保持至篇末。

       通篇一气呵成，具有xiāo____洒流丽、优美动人的无穷魅力。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1）每处错误及其修改均仅限一词；

2）只允许修改10处，多者（从第11处起）不计分。

    The other day, some of my classmates and I took a bicycle trip along the “Renmin Road”, where was specially built for people to relax ourselves. The scenery along the road was fascinating, with trees, flowers, hills and lakes on both side. We stopped by a lake for a rest, where a good many of people were playing happily. But something unpleasant catch our attention, There was rubbish here or there, and there were many plastic bags and bottles floated on the surface of the lake. Such beautiful place was so serious polluted. What a shame! In the end, we couldn't help collecting the rubbish after we left.