The technology industry is at war over intellectual property. On May 7th the first【C1】______of a three-part fight between Oracle

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问题    The technology industry is at war over intellectual property. On May 7th the first【C1】______of a three-part fight between Oracle and Google over patent and copyright claims relating to the Java programming language ended in a decision that denied outright victory to either firm. Apple, Samsung and others are【C2】______over smartphone patents. Facebook and Yahoo! are at【C3】______over internet patents. Accusations abound【C4】______innovation is taking a【C5】______seat to lawsuits. Only the lawyers are smiling.
   All of【C6】______makes this a good time to【C7】______a new approach to trading intellectual property, says Gerard Pannekoek, the boss of IPXI, a new financial【C8】______that lets companies buy, sell and hold patent rights, just like any other【C9】______. The idea is to offer a patent or group of patents as "unit licence rights"(ULRs), which can be bought and sold like【C10】______. A ULR【C11】______a one-time right to use a particular technology in【C12】______product: a new type of airbag sensor in a car, 【C13】______. If a company wants to use the technology in 100, 000 cars, it buys 100, 000 ULRs at the market price. ULRs are also expected to be traded on secondary markets.
   This is simpler, faster and cheaper than the lawyer-intensive process of negotiating bilateral licences for intellectual property, the high cost of which discriminates【C14】______small companies, leaves patents unused on the shelf and【C15】______innovation. IPXI’s approach does not【C16】______for all types of intellectual property—it does not【C17】______exclusive licensing, for example—but should make it【C18】______for companies to make money from their inventions. "It’s a good form of funding for start-ups, " suggests Mr. Pannekoek.
   The exchange has【C19】____ 30 members including Philips, an electronics giant, and several universities and research laboratories. On May 4th IPXI published the rulebook that【C20】______how the exchange will work, and it expects to open for business later this year. Its novel approach is ideal for the open, non-exclusive licensing of smartphone-related patents, says Ruud Peters, chief intellectual-property officer at Philips.
【C19】

选项 A、signed up
B、signed for
C、signed on
D、signed off

答案A

解析 本题考查动词短语辨析。结合上下文可知此处意为“该交易所的加盟成员已达30个”,即它已与30个成员签署了协议,A.signed up“与……签署合同”为正确答案。sign for“签收”,sign on“签约受雇”,sign off“解雇”,均与题意不符。
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