2016年12月英语四级阅读选词填空练习及答案(5)

　　Questions 47 to 56 are based on the following passage.

　　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 gover- nmental protection, the government published the patent __53___ , which had to provide enough information so that other people could understand the invention—thus 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 I ) specifications B) however J ) yield C) accuse K) issue D) submit L) charge

　　E) convenient M) available F) permission N) otherwise G) enable O) original H) free

　　47.D 此处需要一个动词。本句叙述申请专利的程序：申请人申请专利时需要对发明进行具体描述，然后将描述和样品一同提交政府官员，故填submit一词。

　　48.O 此处需要填入一个形容词和beneficial并列作表语。此句介绍政府官员签发专利的条件是原创性和有用性，故填original。

　　49.A 空格前为情态动词could，所以此处需要填入一个动词原形。此处和or后面的use them themselves意义上是对应的。根据常识，申请人获得专利后，专利当然可以自己使用，也可以转让给其他人，故填license“许可，特许”。

　　50.K 此处需要填入一个动词原形。政府为一项发明签发专利后，当然不能再为同样的创意签发专利，故填issue“签发，发行”。

　　51.C 空格前为情态动词could，所以此处需要填入一个动词原形和后面的介词of 搭配使用。句子用without 引导条件——如果没有支付费并获准使用就擅自使用该专利，因为专利受法律保护，发明人有权对其进行起诉。accuse和charge都有“控告，控诉”的意思，但是用法不同，分别为accuse sb. of sth.和charge sb. with sth. ,故排除charge。　　52.F 此处需要填入一个名词作介词for 的宾语。使用专利的人要向专利发明人支付费用， 获得使用权后才能取得专利的使用权。故填permission“许可”。

　　53.I 此处需要一个名词。对于专利，政府一方面实施保护政策，另一方面，为了让大众了解专利的相关知识，政府会出版专利的详细说明，所以填specifications“说明书”。

　　54.M 此处需要一个形容词，修饰其后的名词knowledge。政府出版专利详细说明的目的是让大众能够了解发明，所以填available“可利用的” 。

　　55.H 上一段中提到美国政府在专利申诉的14年内进行保护，在这14年申报人拥有专利的所有权，超过14年，任何人都可以免费使用该专利。此处考查固定短语 for fre“免费的”。

　　56.N 句子主谓结构完整，空格处可以填入一个副词。publicizing ideas和定语从句中的be kept as trade secrets 之间是对比关系，因此需要填入一个表示转折意义的副词 otherwise。otherwise 和 however 都可以表示引导意义的转折，但however常用插入语，其前后需要加逗号，而otherwise 不需要。