根据《实施条例》第八条规定，国有资金占控股或者主导地位的依法必须进行招标的项目，应当公开招标，但具有下列（）情形，可以邀请招标。
A . A.需要采用不可替代的专利或者专有技术
B . B.采用公开招标方式的费用占项目合同金额的比例过大
C . C.需要向原中标人采购工程、货物或者服务
D . D.受环境影响不大、技术要求不高
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Menorca or Majorca It is that time of the year again. The brochures are piling up in travel agents while newspapers and magazines bulge with advice about where to go. But the traditional packaged holiday, a British innovation that provided many timid natives with their first experience of warm sand, is not what it was. Indeed, the industry is anxiously awaiting a High Court ruling to find out exactly what it now is. Two things have changed the way Britons research and book their holidays: low-cost airlines and the Internet. Instead of buying a ready-made package consisting of a flight, hotel, car hire and assorted entertainment from a tour operator’s brochure, it is now convenient to put together a trip using an online travel agent like Expedia or Travelocity , which last July bought Lastminute. com for ￡577 million, or from the proliferating websites of airlines, hotels and car-rental firms. This has led some to sound the death knell for high-street travel agents and tour operators. There have been upheavals and closures, but the traditional firms are starting to fight back, in part by moving more of their business online. First Choice Holidays, for instance, saw its pre-tax profit rise by 16% to ￡114 million in the year to the end of October. Although the total number of holidays booked has fallen, the company is concentrating on more valuable long-haul and adventure trips. First Choice now sells more than half its trips directly, either through the Internet, over the telephone or from its own travel shops. It wants that to reach 75% within a few years. Other tour operators are showing similar hustle. MyTravel managed to cut its loss by almost half in 2005. Thomas Cook and Thomson Holidays, now both German owned, are also bullish about the coming holiday season. Highstreet travel agents are having a tougher time, though, not least because many leading tour operations have cut the commissions they pay. Some high-street travel agents are also learning to live with the Internet, helping people book complicated trips which they have researched online, providing advice and tacking on other services. This is seen as a growth area. But if an agent puts together separate flights, and hotel accommodation, is that a package, too The Civil Aviation Authority (CAA) says it is and the agent should hold an Air Travel Organisers Licence, which provides financial guarantees to repatriate people and provide refunds. The scheme dates from the early 1970s, when some large British travel firms went bust, stranding customers on the Costas. Although such failures are less common these days, the CAA had to help out some 30,000 people last year. The Association of British Travel Agents went to the High Court in November to argue such bookings are not traditional packages and so do not require agents to acquire the costly licences. While the court decides, millions of Britons will happily click away buying online holidays, unaware of the difference.
A．A legal definition.B．A congestion charge.C．Financial guarantee.D．An adventure trip.
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