题目

如图（1），在?ABC中，AB=BC=5，AC=6，?ABC沿BC方向平移得到△ECD，连接AE、AC和BE相交于点O。（1）判断四边形ABCE是怎样的四边形，说明理由；（2）如图（2）,P是线段BC上一动点，（不与点B、C重合），连接PO并延长交线段AB于点Q，QR⊥BD，垂足为点R.四边形PQED的面积是否随点P的运动而发生变化？若变化，请说明理由；若不变，求出四边形PQED的面积.阅读理解 　　The Internet is becoming important in our life. How much do you know about it？ 　　What is the Internet？ 　　The Internet is a large, worldwide collection of computer networks. A network is a small group of computers put together. The Internet is many different networks from all over the world. These networks are called the Internet. Once you have learned to use the Internet, you can have a lot of interest on the World Wide Web. 　　What is the World Wide Web？ 　　The World Wide Web has been the most popular development of the Internet. The Web is like a big electronic book with millions of pages. These pages are called homepages. 　　You can find information about almost anything in the world on these pages. For example, you can use the Internet instead of a library to find information for your homework. You can also find information about your favourite sport or film star, talk to your friends or even do some shopping on the pages. Most pages have words, pictures and even sound and music. 　　What is e-mail？ 　　Electronic mail(e-mail) is a way of sending messages to other people. It's much quicker and cheaper than sending a letter. 　　If you want to use e-mail, you must have an e-mail address. This address must have letters and dots and an @ (meaning at). This is what an address looks like: Emily @ star. net. Write a message, type in the person's e-mail address, then send the message across the Internet. People don't need to use stamps, envelopes or go to the post office since the invention of the Internet. Quick, easy and interesting----that's the Internet！ 1．The Internet is ________. [　　] A．a big computer B．a small group of computers C．lots of computer networks D．the World Wide Web 2．The World Wide Web is like________. [　　] A．an electronic book. B．homepages C．an electronic page D．an interesting picture 3．What does “talk to your friends on the pages” mean？ It means________. [　　] A．you can talk to your friends face to face B．you can type your words in the computer and then send them to your friends across the Internet. C．You talk to your friends through the same computer D．You go to your friends' house to talk to them 4．People like to use e-mail to send messages to their friends and family because________. [　　] A．they don't have to pay any money B．it's faster and cheaper C．they don't need to have stamps, envelopes or addresses D．sending e-mail is interesting 5．The “e” in e-mail means________. [　　] A．easyB．electrical C．electronicD．enjoyable