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With the rapid spread of the internet eye where in the world, and the (1)_____ number of users, one of the most exciting developments on the internet is E-commerce—(2)_____ commerce. E-commerce has two forms, (3)_____ business-to-business, or B-to-B, and business-to-consumer, or B-to-C. B-to-C was the first of these developments. It grew (4)_____ from the first days when people started to buy things from their homes without going to a shop. First came "catalogue shopping" (5)_____ you choose what you want from a catalogue (6)_____ pictures and other details of everything that is (7)_____ sale. You then send an order with a check by (8)_____ and the things you have chosen sent to your home. Then (9)_____ "television shopping", where (10)_____ a catalogue, the items for sale are shown or (11)_____ on television to attract the customer. (12)_____, the customer sends a check and the item is delivered to his or her home. B-to-C is the (13)_____ development, where the "catalogue" is (14)_____ on the internet, combining the advantages of both the book catalogue and the television and indeed adding more (15)_____ The customer makes his choice but rather than sending an order and a (16)_____ through the post, he places the order and pays for it using his credit card, all using the (17)_____ Many people worry about giving (18)_____ of their credit card over the internet and the danger that it may be deceitfully used. (19)_____, the general view is that with modern systems of secure measures the dangers of the misuse of credit cards is (20)_____ greater in a shop, garage or restaurant than in using it for shopping on the internet.
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With the rapid spread of the internet eye where in the world, and the (1)_____ number of users, one of the most exciting developments on the internet is E-commerce—(2)_____ commerce. E-commerce has two forms, (3)_____ business-to-business, or B-to-B, and business-to-consumer, or B-to-C. B-to-C was the first of these developments. It grew (4)_____ from the first days when people started to buy things from their homes without going to a shop. First came "catalogue shopping" (5)_____ you choose what you want from a catalogue (6)_____ pictures and other details of everything that is (7)_____ sale. You then send an order with a check by (8)_____ and the things you have chosen sent to your home. Then (9)_____ "television shopping", where (10)_____ a catalogue, the items for sale are shown or (11)_____ on television to attract the customer. (12)_____, the customer sends a check and the item is delivered to his or her home. B-to-C is the (13)_____ development, where the "catalogue" is (14)_____ on the internet, combining the advantages of both the book catalogue and the television and indeed adding more (15)_____ The customer makes his choice but rather than sending an order and a (16)_____ through the post, he places the order and pays for it using his credit card, all using the (17)_____ Many people worry about giving (18)_____ of their credit card over the internet and the danger that it may be deceitfully used. (19)_____, the general view is that with modern systems of secure measures the dangers of the misuse of credit cards is (20)_____ greater in a shop, garage or restaurant than in using it for shopping on the internet.
(1)打开考生文件夹下的数据库SPORT，首先永久删除该数据库中的temp表，然后将“金牌榜”、“获奖牌情况”和“国家”3个自由表加入该数据库中。 (2)在表设计器中，为表“金牌榜”建立一个普通索引，索引名和索引表达式均为“金牌数”。 (3)使用SQL语句为表“金牌榜”增加一个字段“奖牌总数”(整数型)，同时为该字段设置有效性规则：奖牌总数>=0。请将该SQL语句存储在文件one．prg中，否则不得分。 (4)使用SQL语句更改表“会牌榜”所有记录的“奖牌总数”字段值，该值应为“金牌数”、“银牌数”、“铜牌数”3项之和。请将该SQL语句存储奄文件two．prg中，否则不得分。
With the rapid spread of the internet eye where in the world, and the (1)_____ number of users, one of the most exciting developments on the internet is E-commerce—(2)_____ commerce. E-commerce has two forms, (3)_____ business-to-business, or B-to-B, and business-to-consumer, or B-to-C. B-to-C was the first of these developments. It grew (4)_____ from the first days when people started to buy things from their homes without going to a shop. First came "catalogue shopping" (5)_____ you choose what you want from a catalogue (6)_____ pictures and other details of everything that is (7)_____ sale. You then send an order with a check by (8)_____ and the things you have chosen sent to your home. Then (9)_____ "television shopping", where (10)_____ a catalogue, the items for sale are shown or (11)_____ on television to attract the customer. (12)_____, the customer sends a check and the item is delivered to his or her home. B-to-C is the (13)_____ development, where the "catalogue" is (14)_____ on the internet, combining the advantages of both the book catalogue and the television and indeed adding more (15)_____ The customer makes his choice but rather than sending an order and a (16)_____ through the post, he places the order and pays for it using his credit card, all using the (17)_____ Many people worry about giving (18)_____ of their credit card over the internet and the danger that it may be deceitfully used. (19)_____, the general view is that with modern systems of secure measures the dangers of the misuse of credit cards is (20)_____ greater in a shop, garage or restaurant than in using it for shopping on the internet.
Who would have believed it After what seems like an eternity of tantalizing hype about "high-definition" television, the first digital sets are actually on their way to the market. This much anticipated debut would seem to be terrific news for tube lovers. As promised, the sets deliver super-sharp digital pictures, wide-format movie-style screens and magnificent stereo surround sound. So should everybody rush out to buy one Well...maybe not. HDTV"s obvious advantages over conventional sets are offset by significant disadvantages. For openers, there"s the price tag. Sony"s small set, with a 34-in screen, lists for a fairly large $8,999. Prices will eventually drop, of course, but Bill Mannion, general manager of Panasonic"s TV division, acknowledges, "It"s going to be a while, maybe years before most consumers can afford HDTV." Even if you"re a gadget freak with deep pockets, you may think twice about buying for another reason: "high definition" will not be equally high. Some programs will be broadcast at 480 lines of resolution (compared with 330 or so on conventional televisions), others at a sharper 720 lines, and still others at the maximum of 1,080. NBC says it plans to start by offering 480-line quality for day-time programming and 1,080 for some prime-time shows and specials. But cable-TV customers—a full two-thirds of American households—may get a sinking feeling of another sort if they try to tune in. Cable companies are refusing, for now, to carry broadcasters" HDTV signals, saying information-rich HDTV channels overtax their systems. Therefore viewers, who want decent reception, will have to buy clumsy, old-fashioned TV antennas if they plan to pull in digital broadcasts. One decision consumers won"t have to make is whether to buy a set that uses one format or another. Back in the days when VCRs were new, you could buy a VHS or a Beta-format machine; neither could read or record on the other"s tapes. Those who chose Beta generally regretted it, as VHS took over the market, video companies stopped releasing Beta-format movies, and Beta sets became essentially useless. Most reassuring of all, the new sets will be able to pick up conventional TV broadcasts. You won"t need two TV sets sitting side by side. Will that be enough to talk consumers into putting down the better part of $10,0007 Manufactures hope that wide-eyed excitement over this genuinely revolutionary new technology will help hide the fact that it"s still a work in progress. Realistically, they expect the revolution to be a slow one. If you are rich and interested in new devices, you would
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