四级复习资料大全阅读(34)

　　The American patent system, provided for in the Constitution, was designed to encourage the creation and use of new technology. An inventor would describe the invention, both in writing and with drawings, and __47__ the description with a model to a government official. If the invention was judged to be ___48__ and beneficial, the official would give the inventor a patent. The patent meant that for 14 years the inventor owned the new invention. Inventors could ___49__ their ideas to manufacturers or just use them themselves. The government would not ___50__ any other patent for the same idea, and the inventor could ___51__ anyone of using the patented idea with- out paying the owner of the patent for ___52__ to use it.

　　A useful patent meant that the inventor could make a lot of money. In exchange for this governmental protection, the government published the patent __53___ , which had to provide enough information so that other people could understand the inventionthus adding to the general__54_technological knowledge. And at the end of the 14 years, anyone could use the invention for__55__.The idea behind the patent system was twofold: it would increase the amount of technology, by providing a way for people to make money out of new ideas, and it would make new technology widely available, by publicizing ideas that might ___56__ be kept as trade secrets.

　　A) license B) however C) accuse D) submit E) convenient

　　F) permission G) enable H) free I ) specifications J ) yield

　　K) issue L) charge 　M) available N) otherwise 　　O) original