题目内容
She was nowhere to be found．__________her friends where she was going，she would have saved them a lot of trouble．
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当初步没计深度不够，不能准确地计算工程量，但工程没计采用的技术比较成熟而又有类似工程概算指标可以利用时，编制工程概算可以采用()
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What is eBay？The simple answer is that it is a global trading platform. where nearly any-one can trade practically anything ．People can sell and buy all kinds of products and goods，in-cluding cars，movies and DVDs，sporting goods，travel tickets，musical instruments，clothes and shoes--the list goes on and on．
The idea came from Peter Omidyar， who was born in Paris and moved to Washington
when he was still a child．At high school，he became very interested in computer programming and after graduating from Tuft University in l988，he worked for the nex．t few years as a com-Duter engineer．In his free time he started eBay as a kind of hobby，at first offering the service free bv word of mouth．By l996 there was so much traffic on the website that he had to upgrade and he began charging a fee to members．Joined by a friend，Peter Skoll，and in l998 by his capable CEO，Meg Whitman，he has never looked back.Even in the．great coru crashes of the 1ate l990s，eBay has gone from strength to strength．it is now one of the ten most Visited online
shopping websites on the Internet．
eBay sells connections，not goods，putting buyer and seller into contact with each other.All vou have to do is take an e．photo，write a description，fill out a sales form. and you’re in business；the worid is your market place．Of course for each item sold eBay gets a percentage and that is agreat deal of money．Every day there are more than sixteen million items listed on eBay and eighty percent of the items are sold.
We leam from the text that eBay provides people with__________. 查看材料
请举出几种常见的防腐剂，并说明它们的使用范围。
阅读下面的短文。完成28—30题。 (一)小时候，台北地区的大桥还没有今天这样多，福和桥、永福桥、关渡桥……尚未兴建，公馆到永和、关渡到八里，都必须靠着小船来往，我和许多人都曾坐过那些渡船。 (二)每回坐渡船，看舟子来来往往，我便禁不住想到：由此岸到彼岸，老舟子这一生引载过多少人？摆渡的工作虽然不起眼，但仍在许多的生命中留下印痕。 (三)其实，许多角色都像从事摆渡工作的舟子：一个师傅，以绝活传授弟子，绵延许多技艺；为人父母，以勤朴传承家风，引领子女；而长官以公忠塑造俯仰无愧的典范，引领部属；陌生人之间也可以真诚传递无形的情谊与人间的声息。 (四)所以，在生活的过程中，人人都要做一个摆渡者，切切实实载起他应负的责任。即便是蜜蜂和蝴蝶，也能使花粉花蜜传播得更远。真正的人生不是到世间白走一趟。引领的心，真诚的爱，在时间、空间的海洋中，会产生一股力量，使你鼓起勇气划着满载的小船，到达洒满阳光的彼岸。 第(三)段画线部分列举的四个例证，想要说明的观点是()。
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