Q9: 答案是A,为何不是B?
The passage makes which of the following claims about patent quality in the semiconductor industry?
A. It was higher in the early 1980’s than it was a decade later.
B. It is largely independent of the number of patents granted.
C. It changed between 1982 and 1992 in ways that were linked to changes in research and development expenditures.
D. It is not adequately discussed in the industry’s technical literature.
E. It was measured by inappropriate means during the period from 1982 to 1992. |