题目

What does the word “patent (专利权)” mean to you? Does it interest you? If it does, stop and think a moment about some of the common things that you use every day: the telephone, radio, television, and the thousands of other things that enrich our lives today, were once only ideas in the minds of men. If it had not been possible to patent their ideas, so as to protect them from being copied, these inventions might never have been fully developed to serve human beings.If there were no patent protection, there would be little encouragement to invent, for once the secrets of an invention b我比妈妈年龄大是              ；地球绕着太阳转是              A.一定B.不可能C.可能