探究题

玲玲和贝贝做了一次地理探究活动，两人分别从长白山的东南和西北攀登到山顶，并对植被、降水和气温做了比较详细的测定，记录资料如下．

读下面的文字，回答问题：
         刘四爷是虎相。快七十了，腰板不弯，拿起腿还走个十里二十里的。两只大圆眼，大鼻头，方嘴，一对大虎牙，一张口就像个老虎。个子几乎与祥子一边儿高，头剃得很亮，没留胡子。他自居老虎，可惜没有儿子，只有个三十七八岁的虎女——知道刘四爷的就必也知道（ A ）。她也长得虎头虎脑，因此吓住了男人，帮助父亲办事是把好手，可是没人敢娶她做太太。她什么都和男人一样，连骂人也有男人的爽快，有时候更多一些花样。
        在买上自己的车以前，（  B ）拉过人和厂的车。他的积蓄就交给刘四爷给存着。把钱凑够了数，他要过来，买上了那辆新车。

    Bill is only fifteen years old，but he's already very rich．Two years ago，Bill began a football website（网站）for young people. "I became interested in computers when I was 8 years old  because my father's job is with computers．As a little boy，I also loved football and so I decided to make a website，especially for people of my age．"

    Bill started the "Football OK!" website two years ago，and now more than 20,000 people visit it every day．

    Bill is a schoolboy and a businessman as well．He usually gets up at six o'clock and looks at his e-mails．Then he goes to school from nine to four．In the evenings，he always works for about four hours on his website．

    Bill's next plan is a new website." At the moment I am thinking about a new website on American football，maybe for next year．"

    And is Bill the same person that he was three years ago? "'No，I am very different now．I have met a lot of interesting people on the website and I have traveled all over the world．" Bill doesn't know about the future．"Maybe I will sell the websites. I really don't know．I'll just wait and see."

    Some people say that when he is 21，Bill will be a millionaire（百万富翁). He always says, “Anything is possible”!

①散会了，人们____走出会场，奔向四面八方。

②小明双摇跳得真不错，这不，____跳了二十多个都没坏。

③系好鞋带后，弟弟____和小朋友玩起了老鹰捉小鸡的游戏。

④夜幕下的公园里看不见一个人影，十分____

⑤台风过后，大海又恢复了____

⑥上课铃一响，喧闹的教室顿时____下来了。

已知：P是正方形ABCD对角线BD上一点，PE⊥DC，PF⊥BC，E、F分别为垂足．

求证：AP=EF．