完形填空

    The summer vacation is the best time for students．They can go outdoors and have fun．They can go to big cities to  1，or go to the countryside to 2the beauty of nature(大自然)．

    Peter is an American middle school student and he loves 3  very much．He always travels in his country．

    This summer vacation he wants to do4．He is interested in Chinese history． 5he is flying to Beijing and Xi'an for the summer vacation．He is leaving on l2th July and 6 New York on the last day of the month．He plans 7 a fantastic vacation．During the 8，he is visiting places of interest and going shopping．At night，he is  9  to enjoy the night views．,He is sure he will have a  10 time．

将下列句子组合成语意连贯、合乎逻辑的一段话，并将序号填入横线处。

铅色水鸫的行为最具代表性。它常守候在溪面凹凸不动的岩石上，然后沿着岩石群逐一跳跃，捕捉溪水附近肉眼难见的蜉蝣与蚊蚋科小虫。溪涧的天地小溪鸟的领域感自然十分强烈，铅色水鸫更是如此。____，____，____，

____，____，____。一山不容二鸟，两者之间势必起冲突。我都未看见小剪尾打赢过铅色水鸫。 

①它的体积约摸麻雀大，攻击性却勇猛凶悍

②究其原因，原来它的习性类似铅色水鸫

③日后我也发现只有小剪尾独独会遭受铅色水鸫的排斥

④不但觅寻的主食来源一样，体积也相似，而且活动的位置都是岩石滩

⑤在溪涧王国里，这种场面算是最激烈的争斗

⑥我经常看见大它半倍的小剪尾遭到驱逐，落荒而飞

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